[][Add initial mtk feed for OpenWRT v21.02]

[Description]
Add initial mtk feed for OpenWRT v21.02

[Release-log]
N/A

Change-Id: I8051c6ba87f1ccf26c02fdd88a17d66f63c0b101
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4495320
diff --git a/openwrt_patches-21.02/103-generic-kernel-config-for-mtk-snand-driver.patch b/openwrt_patches-21.02/103-generic-kernel-config-for-mtk-snand-driver.patch
new file mode 100644
index 0000000..4df19fd
--- /dev/null
+++ b/openwrt_patches-21.02/103-generic-kernel-config-for-mtk-snand-driver.patch
@@ -0,0 +1,10 @@
+--- a/target/linux/generic/config-5.4
++++ b/target/linux/generic/config-5.4
+@@ -3273,6 +3273,7 @@ CONFIG_MTD_SPLIT_SUPPORT=y
+ # CONFIG_MTD_UIMAGE_SPLIT is not set
+ # CONFIG_MTD_VIRT_CONCAT is not set
+ # CONFIG_MTK_MMC is not set
++# CONFIG_MTK_SPI_NAND is not set
+ CONFIG_MULTIUSER=y
+ # CONFIG_MUTEX_SPIN_ON_OWNER is not set
+ # CONFIG_MV643XX_ETH is not set