[][Add mtk misc driver support]

[Description]
Add mtk misc driver support
1. add ice_debug driver part
2. add kernel patch to build mtk misc drivers

[Release-log]
N/A

Change-Id: If76c2a6b4e11e83ff50e2c06115ae566f990b5d6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4692312
diff --git a/target/linux/mediatek/patches-5.4/2000-misc-add-mtk-platform.patch b/target/linux/mediatek/patches-5.4/2000-misc-add-mtk-platform.patch
new file mode 100644
index 0000000..f280e10
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/2000-misc-add-mtk-platform.patch
@@ -0,0 +1,17 @@
+diff -urN a/drivers/misc/Kconfig b/drivers/misc/Kconfig
+--- a/drivers/misc/Kconfig	2021-06-29 15:10:00.970788831 +0800
++++ b/drivers/misc/Kconfig	2021-06-29 15:09:41.579158152 +0800
+@@ -481,4 +481,5 @@
+ source "drivers/misc/ocxl/Kconfig"
+ source "drivers/misc/cardreader/Kconfig"
+ source "drivers/misc/habanalabs/Kconfig"
++source "drivers/misc/mediatek/Kconfig"
+ endmenu
+diff -urN a/drivers/misc/Makefile b/drivers/misc/Makefile
+--- a/drivers/misc/Makefile	2021-06-29 15:10:15.150518461 +0800
++++ b/drivers/misc/Makefile	2021-06-29 15:09:46.939056121 +0800
+@@ -57,3 +57,4 @@
+ obj-$(CONFIG_PVPANIC)   	+= pvpanic.o
+ obj-$(CONFIG_HABANA_AI)		+= habanalabs/
+ obj-$(CONFIG_XILINX_SDFEC)	+= xilinx_sdfec.o
++obj-$(CONFIG_ARCH_MEDIATEK)	+= mediatek/