kernel: bump 4.14 to 4.14.70

Refreshed all patches.

Added new patch:
- 192-Revert-ubifs-xattr-Don-t-operate-on-deleted-inodes.patch

This fixes a bug introduced in upstream 4.14.68 which caused targets using
ubifs to produce file-system errors on boot, rendering them useless.

Compile-tested on: cns3xxx, imx6, x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

target/linux/ramips/patches-4.14/0003-MIPS-Fix-memory-reservation-in-bootmem_init-for-cert.patch

@@ -14,8 +14,8 @@ This patch adds the originally intended prerequisite again.
 Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de>
 ---
 
---- a/arch/mips/kernel/setup.c        2018-08-18 19:07:07.142066706 +0200
-+++ b/arch/mips/kernel/setup.c        2018-08-18 19:10:17.827918423 +0200
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
 @@ -369,6 +369,8 @@ static unsigned long __init bootmap_byte
  	return ALIGN(bytes, sizeof(long));
  }

target/linux/ramips/patches-4.14/0051-serial-add-ugly-custom-baud-rate-hack.patch

@@ -10,7 +10,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 
 --- a/drivers/tty/serial/serial_core.c
 +++ b/drivers/tty/serial/serial_core.c
-@@ -411,6 +411,9 @@ uart_get_baud_rate(struct uart_port *por
+@@ -418,6 +418,9 @@ uart_get_baud_rate(struct uart_port *por
  		break;
  	}