ARM: imx: mx6ull: Add iMX6ULL VisionSOM SoM and EVK

Add iMX6ULL VisionSOM SoM and VisionCB-RT-STD evaluation board support.
The SoM has an iMX6ULL, 512 MiB of DRAM and microSD slot. The carrier
board has Ethernet, USB host port, USB OTG port.

Signed-off-by: Arkadiusz Karas <arkadiusz.karas@somlabs.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 04a8ccc..b2f127d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -676,6 +676,7 @@
 	imx6ull-colibri.dtb \
 	imx6ull-phytec-segin-ff-rdk-emmc.dtb \
 	imx6ull-dart-6ul.dtb \
+	imx6ull-somlabs-visionsom.dtb \
 	imx6ulz-14x14-evk.dtb
 
 dtb-$(CONFIG_ARCH_MX6) += \