kernel: enable EXPORTFS by default

OVERLAY_FS config symbol selects EXPORTFS since 4.12 kernel, we have
OVERLAY_FS enabled by default, so enable EXPORTFS in the generic config
of 4.14 and remove this option from platform specific configs.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>

target/linux/apm821xx/config-4.14

@@ -98,7 +98,6 @@ CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 # CONFIG_EIGER is not set
 # CONFIG_EPAPR_BOOT is not set
-CONFIG_EXPORTFS=y
 CONFIG_EXTRA_TARGETS="uImage"
 CONFIG_FIXED_PHY=y
 # CONFIG_FORCE_SMP is not set

target/linux/archs38/config-4.14

@@ -66,7 +66,6 @@ CONFIG_DWMAC_ANARION=y
 # CONFIG_DWMAC_DWC_QOS_ETH is not set
 CONFIG_DWMAC_GENERIC=y
 CONFIG_DW_APB_ICTL=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 # CONFIG_EZNPS_GIC is not set
 CONFIG_FIXED_PHY=y

target/linux/ath79/config-4.14

@@ -57,7 +57,6 @@ CONFIG_DMA_NONCOHERENT=y
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_ETHERNET_PACKET_MANGLE=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/bcm53xx/config-4.14

@@ -131,7 +131,6 @@ CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
-CONFIG_EXPORTFS=y
 CONFIG_EXTCON=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y

target/linux/brcm47xx/config-4.14

@@ -67,7 +67,6 @@ CONFIG_CRYPTO_WORKQUEUE=y
 CONFIG_CSRC_R4K=y
 CONFIG_DMA_NONCOHERENT=y
 # CONFIG_EARLY_PRINTK is not set
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/brcm63xx/config-4.14

@@ -76,7 +76,6 @@ CONFIG_CSRC_R4K=y
 CONFIG_DMA_NONCOHERENT=y
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
-CONFIG_EXPORTFS=y
 CONFIG_FIRMWARE_IN_KERNEL=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y

target/linux/cns3xxx/config-4.14

@@ -98,7 +98,6 @@ CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_EEPROM_AT24=y
 CONFIG_ELF_CORE=y
-CONFIG_EXPORTFS=y
 CONFIG_FIQ=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y

target/linux/gemini/config-4.14

@@ -147,7 +147,6 @@ CONFIG_ELF_CORE=y
 # CONFIG_EMBEDDED is not set
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_EXPERT is not set
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 CONFIG_FARADAY_FTINTC010=y
 CONFIG_FHANDLE=y

target/linux/generic/config-4.14

@@ -1272,7 +1272,7 @@ CONFIG_ETHERNET=y
 # CONFIG_ETHOC is not set
 CONFIG_EVENTFD=y
 CONFIG_EXPERT=y
-# CONFIG_EXPORTFS is not set
+CONFIG_EXPORTFS=y
 # CONFIG_EXPORTFS_BLOCK_OPS is not set
 # CONFIG_EXT2_FS is not set
 # CONFIG_EXT2_FS_XATTR is not set

target/linux/imx6/config-4.14

@@ -172,7 +172,6 @@ CONFIG_E1000E=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_ENCRYPTED_KEYS=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_ENCRYPTION=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_ENCRYPTION=y

target/linux/ipq40xx/config-4.14

@@ -157,7 +157,6 @@ CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_EEPROM_AT24=y
 CONFIG_ESSEDMA=y
-CONFIG_EXPORTFS=y
 CONFIG_EXTCON=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y

target/linux/kirkwood/config-4.14

@@ -107,7 +107,6 @@ CONFIG_DTC=y
 # CONFIG_EARLY_PRINTK is not set
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y

target/linux/lantiq/config-4.14

@@ -50,7 +50,6 @@ CONFIG_DTC=y
 # CONFIG_DT_EASY50712 is not set
 CONFIG_EARLY_PRINTK=y
 CONFIG_ETHERNET_PACKET_MANGLE=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/mediatek/config-4.14

@@ -165,7 +165,6 @@ CONFIG_EARLY_PRINTK=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_ELF_CORE=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FREEZER=y

target/linux/mvebu/config-4.14

@@ -169,7 +169,6 @@ CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 CONFIG_EXTCON=y
 # CONFIG_F2FS_CHECK_FS is not set

target/linux/octeon/config-4.14

@@ -95,7 +95,6 @@ CONFIG_EARLY_PRINTK=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_ENABLE_MUST_CHECK=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 # CONFIG_F2FS_CHECK_FS is not set
 CONFIG_F2FS_FS=y

target/linux/octeontx/config-4.14

@@ -199,7 +199,6 @@ CONFIG_EDAC_SUPPORT=y
 CONFIG_EDAC_THUNDERX=y
 # CONFIG_EDAC_XGENE is not set
 CONFIG_EEPROM_AT24=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
 # CONFIG_F2FS_CHECK_FS is not set

target/linux/omap/config-4.14

@@ -223,7 +223,6 @@ CONFIG_DTC=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_EEPROM_93CX6=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 # CONFIG_EXT3_FS_POSIX_ACL is not set

target/linux/pistachio/config-4.14

@@ -86,7 +86,6 @@ CONFIG_DTC=y
 CONFIG_DWMAC_GENERIC=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_EARLY_PRINTK_8250=y
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
 CONFIG_EXT4_FS_SECURITY=y

target/linux/ramips/mt7620/config-4.14

@@ -59,7 +59,6 @@ CONFIG_DTB_RT_NONE=y
 # CONFIG_DTB_VOCORE2 is not set
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/ramips/mt76x8/config-4.14

@@ -59,7 +59,6 @@ CONFIG_DTB_RT_NONE=y
 # CONFIG_DTB_VOCORE2 is not set
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/ramips/rt288x/config-4.14

@@ -53,7 +53,6 @@ CONFIG_DMA_NONCOHERENT=y
 CONFIG_DTB_RT_NONE=y
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/ramips/rt3883/config-4.14

@@ -56,7 +56,6 @@ CONFIG_DTB_RT_NONE=y
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_ETHERNET_PACKET_MANGLE=y
-CONFIG_EXPORTFS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FUTEX_PI=y
 CONFIG_GENERIC_ATOMIC64=y

target/linux/sunxi/config-4.14

@@ -164,7 +164,6 @@ CONFIG_ELF_CORE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_ENABLE_MUST_CHECK=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 CONFIG_EXTCON=y
 # CONFIG_F2FS_CHECK_FS is not set

target/linux/x86/config-4.14

@@ -129,7 +129,6 @@ CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 # CONFIG_EDD is not set
 # CONFIG_EUROTECH_WDT is not set
-CONFIG_EXPORTFS=y
 CONFIG_EXT4_FS=y
 # CONFIG_F2FS_CHECK_FS is not set
 CONFIG_F2FS_FS=y