ARM: bcm281xx: Add device node for the GPIO controller

Add the GPIO controller device node for the Broadcom bcm281xx family of
mobile SoCs.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Matt Porter <matt.porter@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Christian Daudt <bcm@fixthebug.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/boot/dts/bcm11351.dtsi

@@ -68,6 +68,22 @@ timer@35006000 {
 		clock-frequency = <32768>;
 	};
 
+	gpio: gpio@35003000 {
+		compatible = "brcm,bcm11351-gpio", "brcm,kona-gpio";
+		reg = <0x35003000 0x800>;
+		interrupts =
+		       <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH
+			GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH
+			GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH
+			GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH
+			GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH
+			GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
+		#gpio-cells = <2>;
+		#interrupt-cells = <2>;
+		gpio-controller;
+		interrupt-controller;
+	};
+
 	sdio1: sdio@3f180000 {
 		compatible = "brcm,kona-sdhci";
 		reg = <0x3f180000 0x10000>;