uboot-mediatek: update to U-Boot 2023.01

Support for MT7981 and MT7986 has been merged, remove patches.
Tested on a couple of MT7986, MT7622 and MT7623 boards.
MIPS builds are untested.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

package/boot/uboot-mediatek/patches/410-add-linksys-e8450.patch

@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/configs/mt7622_linksys_e8450_defconfig
-@@ -0,0 +1,136 @@
+@@ -0,0 +1,137 @@
 +CONFIG_ARM=y
 +CONFIG_POSITION_INDEPENDENT=y
 +CONFIG_ARCH_MEDIATEK=y
@@ -126,6 +126,7 @@
 +CONFIG_MTK_SPI_NAND=y
 +CONFIG_MTK_SPI_NAND_MTD=y
 +CONFIG_SYSRESET_WATCHDOG=y
++CONFIG_SYS_HAS_NONCACHED_MEMORY=y
 +CONFIG_WDT_MTK=y
 +CONFIG_LZO=y
 +CONFIG_ZSTD=y
@@ -335,7 +336,7 @@
 +};
 --- a/arch/arm/dts/Makefile
 +++ b/arch/arm/dts/Makefile
-@@ -1231,6 +1231,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
+@@ -1263,6 +1263,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
  	mt7622-rfb.dtb \
  	mt7623a-unielec-u7623-02-emmc.dtb \
  	mt7622-bananapi-bpi-r64.dtb \