arm/dts: OMAP3: Add gpio nodes

Add the 6 GPIOs controller nodes present in OMAP3.
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>

arch/arm/boot/dts/omap3.dtsi

@@ -69,6 +69,60 @@ intc: interrupt-controller@48200000 {
 			reg = <0x48200000 0x1000>;
 		};
 
+		gpio1: gpio@48310000 {
+			compatible = "ti,omap3-gpio";
+			ti,hwmods = "gpio1";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		gpio2: gpio@49050000 {
+			compatible = "ti,omap3-gpio";
+			ti,hwmods = "gpio2";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		gpio3: gpio@49052000 {
+			compatible = "ti,omap3-gpio";
+			ti,hwmods = "gpio3";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		gpio4: gpio@49054000 {
+			compatible = "ti,omap3-gpio";
+			ti,hwmods = "gpio4";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		gpio5: gpio@49056000 {
+			compatible = "ti,omap3-gpio";
+			ti,hwmods = "gpio5";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		gpio6: gpio@49058000 {
+			compatible = "ti,omap3-gpio";
+			ti,hwmods = "gpio6";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
 		uart1: serial@4806a000 {
 			compatible = "ti,omap3-uart";
 			ti,hwmods = "uart1";