uboot: imx: add xiaomi dgnwg05lm board support

Boot from nand, squashfs or ubifs (set env bootargs=$(bootargs_ubi) or set env bootargs=$(bootargs_squash))
Added pwm leds and button (state available on env)

Contains driver update from NXP: MLK-11719-4: mtd: gpmi: change the BCH layout setting for large oob NAND

Signed-off-by: Ivan Belokobylskiy <belokobylskij@gmail.com>

package/boot/uboot-envtools/files/imx_cortexa7

@@ -11,6 +11,9 @@ case "$board" in
 technexion,imx7d-pico-pi)
 	ubootenv_add_uci_config "/dev/mmcblk2" "0xc0000" "0x2000" "0x2000"
 	;;
+xiaomi,dgnwg05lm)
+	ubootenv_add_uci_config "/dev/mtd0" "0x2e0000" "0x20000" "0x20000" "4"
+	;;
 esac
 
 config_load ubootenv

package/boot/uboot-imx/Makefile

@@ -50,11 +50,17 @@ define U-Boot/wandboard
   BUILD_DEVICES:=wandboard_dual
 endef
 
+define U-Boot/xiaomi_dgnwg05lm
+  NAME:=Xiaomi Lumi gateway
+  BUILD_DEVICES:=xiaomi_dgnwg05lm
+endef
+
 UBOOT_TARGETS := \
 	apalis_imx6 \
 	mx6cuboxi \
 	pico-pi-imx7d \
-	wandboard
+	wandboard \
+	xiaomi_dgnwg05lm
 
 UBOOT_MAKE_FLAGS += u-boot.imx