[][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-21.02/104-enable-mtk-snand-for-mt7622.patch b/openwrt_patches-21.02/104-enable-mtk-snand-for-mt7622.patch
new file mode 100644
index 0000000..ee5059c
--- /dev/null
+++ b/openwrt_patches-21.02/104-enable-mtk-snand-for-mt7622.patch
@@ -0,0 +1,10 @@
+--- a/target/linux/mediatek/mt7622/config-5.4
++++ b/target/linux/mediatek/mt7622/config-5.4
+@@ -414,6 +414,7 @@ CONFIG_MTK_SCPSYS=y
+ CONFIG_MTK_THERMAL=y
+ CONFIG_MTK_TIMER=y
+ # CONFIG_MTK_UART_APDMA is not set
++CONFIG_MTK_SPI_NAND=y
+ CONFIG_MUTEX_SPIN_ON_OWNER=y
+ CONFIG_NEED_DMA_MAP_STATE=y
+ CONFIG_NEED_SG_DMA_LENGTH=y