Add 6.1 kernel support from coolsnowwolf and Ansuel

root/target/linux/generic/hack-6.1/430-mtk-bmt-support.patch

@@ -0,0 +1,33 @@
+From ac84397efb3b3868c71c10ad7521161773228a17 Mon Sep 17 00:00:00 2001
+From: OpenWrt community <openwrt-devel@lists.openwrt.org>
+Date: Wed, 13 Jul 2022 13:41:44 +0200
+Subject: [PATCH] mtd/nand: add MediaTek NAND bad block managment table
+
+---
+ drivers/mtd/nand/Kconfig  | 4 ++++
+ drivers/mtd/nand/Makefile | 1 +
+ 2 files changed, 5 insertions(+)
+
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -46,6 +46,10 @@ config MTD_NAND_ECC_SW_BCH
+ 	  ECC codes. They are used with NAND devices requiring more than 1 bit
+ 	  of error correction.
+ 
++config MTD_NAND_MTK_BMT
++	bool "Support MediaTek NAND Bad-block Management Table"
++	default n
++
+ config MTD_NAND_ECC_MXIC
+ 	bool "Macronix external hardware ECC engine"
+ 	depends on HAS_IOMEM
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -3,6 +3,7 @@
+ nandcore-objs := core.o bbt.o
+ obj-$(CONFIG_MTD_NAND_CORE) += nandcore.o
+ obj-$(CONFIG_MTD_NAND_ECC_MEDIATEK) += ecc-mtk.o
++obj-$(CONFIG_MTD_NAND_MTK_BMT)	+= mtk_bmt.o mtk_bmt_v2.o mtk_bmt_bbt.o mtk_bmt_nmbm.o
+ 
+ obj-y	+= onenand/
+ obj-y	+= raw/