ARM: dts: add initial Rex Pro board support

Add initial Rex Pro i.mx6q board support. Ethernet, UART, USB, I2C, SPI, HDMI,
Audio, and SDHC cards are working.  Currently no mainline u-boot, so boot with
cat zImage imx6q-rex-pro.dtb > zImage.dtb, then using mkimage create uImage

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 90d5f49..0621042 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -219,6 +219,7 @@
 	imx6q-gw54xx.dtb \
 	imx6q-nitrogen6x.dtb \
 	imx6q-phytec-pbab01.dtb \
+	imx6q-rex-pro.dtb \
 	imx6q-sabreauto.dtb \
 	imx6q-sabrelite.dtb \
 	imx6q-sabresd.dtb \