kernel: add the latest mtd patch extending ofpart parser

This adds the latest version of ofpart commit. It hopefully
1. Doesn't break compilation
2. Doesn't break partitioning
(this time).

It's required to implement fixed partitioning with some quirks. It's
required by bcm53xx, bcm4908, kirkwood, lantiq and mvebu.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 7a7b2fd809)

target/linux/ath79/patches-5.4/404-mtd-cybertan-trx-parser.patch

@@ -1,18 +1,18 @@
 --- a/drivers/mtd/parsers/Makefile
 +++ b/drivers/mtd/parsers/Makefile
-@@ -5,6 +5,7 @@ obj-$(CONFIG_MTD_BCM63XX_PARTS)		+= bcm6
- obj-$(CONFIG_MTD_CMDLINE_PARTS)		+= cmdlinepart.o
- obj-$(CONFIG_MTD_MYLOADER_PARTS)		+= myloader.o
+@@ -7,6 +7,7 @@ obj-$(CONFIG_MTD_MYLOADER_PARTS)		+= myl
  obj-$(CONFIG_MTD_OF_PARTS)		+= ofpart.o
+ ofpart-y				+= ofpart_core.o
+ ofpart-$(CONFIG_MTD_OF_PARTS_BCM4908)	+= ofpart_bcm4908.o
 +obj-$(CONFIG_MTD_PARSER_CYBERTAN)	+= parser_cybertan.o
  obj-$(CONFIG_MTD_PARSER_IMAGETAG)	+= parser_imagetag.o
  obj-$(CONFIG_MTD_AFS_PARTS)		+= afs.o
  obj-$(CONFIG_MTD_PARSER_TRX)		+= parser_trx.o
 --- a/drivers/mtd/parsers/Kconfig
 +++ b/drivers/mtd/parsers/Kconfig
-@@ -83,6 +83,14 @@ config MTD_OF_PARTS
- 	  flash memory node, as described in
- 	  Documentation/devicetree/bindings/mtd/partition.txt.
+@@ -92,6 +92,14 @@ config MTD_OF_PARTS_BCM4908
+ 	  that can have multiple "firmware" partitions. It takes care of
+ 	  finding currently used one and backup ones.
  
 +config MTD_PARSER_CYBERTAN
 +	tristate "Parser for Cybertan format partitions"