[Add meta-filogic bsp for rdkb development]

[Description]
Add meta-filogic bsp for rdkb development
1. rdkb base on dunfell rdkb-next (> 2022q1)
2. arm64/arm 32bit bsp both can run on rdkb

[Release-log]
N/A

diff --git a/recipes-kernel/linux/linux-mediatek-5.4/mediatek/patches-5.4/400-mtd-add-mtk-snand-driver.patch b/recipes-kernel/linux/linux-mediatek-5.4/mediatek/patches-5.4/400-mtd-add-mtk-snand-driver.patch
new file mode 100644
index 0000000..f283bd2
--- /dev/null
+++ b/recipes-kernel/linux/linux-mediatek-5.4/mediatek/patches-5.4/400-mtd-add-mtk-snand-driver.patch
@@ -0,0 +1,21 @@
+--- a/drivers/mtd/Kconfig
++++ b/drivers/mtd/Kconfig
+@@ -230,6 +230,8 @@ source "drivers/mtd/hyperbus/Kconfig"
+ 
+ source "drivers/mtd/nmbm/Kconfig"
+ 
++source "drivers/mtd/mtk-snand/Kconfig"
++
+ source "drivers/mtd/composite/Kconfig"
+ 
+ endif # MTD
+--- a/drivers/mtd/Makefile
++++ b/drivers/mtd/Makefile
+@@ -35,5 +35,7 @@ obj-$(CONFIG_MTD_HYPERBUS)	+= hyperbus/
+ 
+ obj-y				+= nmbm/
+ 
++obj-$(CONFIG_MTK_SPI_NAND)	+= mtk-snand/
++
+ # Composite drivers must be loaded last
+ obj-y				+= composite/