ARM: dts: enable IOMUX for Broadcom Cygnus

This enables the IOMUX support for Broadcom Cygnus SoC
Signed-off-by: Ray Jui <rjui@broadcom.com>
Tested-by: Dmitry Torokhov <dtor@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm-cygnus.dtsi

@@ -54,6 +54,12 @@ cpu@0 {
 
 	/include/ "bcm-cygnus-clock.dtsi"
 
+	pinctrl: pinctrl@0x0301d0c8 {
+		compatible = "brcm,cygnus-pinmux";
+		reg = <0x0301d0c8 0x30>,
+		      <0x0301d24c 0x2c>;
+	};
+
 	amba {
 		#address-cells = <1>;
 		#size-cells = <1>;