ARM: dts: imx: Add i.mx6q DaSheng COM-9XX SBC board support

The DaSheng Com-9xx is and ARM based signle board computer (SBC)
featuring:
- i.MX6Q
- 2GiB LPDDR3 DRAM
- 8GiB eMMC 5.0 FLASH
- 4MiB SPI Flash
- USB 2.0 Host/Device
- Multiple multi-protocol RS232/RS485 Serial ports
- microSD socket
- 5V DC power input
- HDMI1.4a,1080p@60
- RGMIIx1 Gigabit Ethernet
- CSI0x1, connect with ov2659
Signed-off-by: Dillon Min <dillon.minfei@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/Makefile

@@ -513,6 +513,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6q-display5-tianma-tm070-1280x768.dtb \
 	imx6q-dmo-edmqmx6.dtb \
 	imx6q-dms-ba16.dtb \
+	imx6q-ds.dtb \
 	imx6q-emcon-avari.dtb \
 	imx6q-evi.dtb \
 	imx6q-gk802.dtb \

arch/arm/boot/dts/imx6q-ds.dts

+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright 2021 Dillon Min <dillon.minfei@gmail.com>
+//
+// Based on imx6qdl-sabresd.dtsi which is:
+// Copyright 2012 Freescale Semiconductor, Inc.
+// Copyright 2011 Linaro Ltd.
+
+/dts-v1/;
+
+#include "imx6q.dtsi"
+#include "imx6qdl-ds.dtsi"
+
+/ {
+	model = "DaSheng i.MX6 Quad Com-9xx Board";
+	compatible = "ds,imx6q-sbc", "fsl,imx6q";
+};