ARM: imx6q: Add iomuxc gpr support into syscon

Include headfile for easy using.
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

arch/arm/boot/dts/imx6q.dtsi

@@ -507,6 +507,11 @@ gpc@020dc000 {
 				interrupts = <0 89 0x04 0 90 0x04>;
 			};
 
+			gpr: iomuxc-gpr@020e0000 {
+				compatible = "fsl,imx6q-iomuxc-gpr", "syscon";
+				reg = <0x020e0000 0x38>;
+			};
+
 			iomuxc@020e0000 {
 				compatible = "fsl,imx6q-iomuxc";
 				reg = <0x020e0000 0x4000>;