ARM: dts: imx6q-phytec: Added USB_OTG Support

This patch adds support for USB_OTG on Phytec phyFLEX-i.MX6 Quad module.
Signed-off-by: Ashutosh singh <ashutosh.s@phytec.in>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6q-phytec-pbab01.dts

@@ -25,6 +25,10 @@ &uart4 {
 	status = "okay";
 };
 
+&usbotg {
+	status = "okay";
+};
+
 &usdhc2 {
 	status = "okay";
 };

arch/arm/boot/dts/imx6q-phytec-pfla02.dtsi

@@ -18,6 +18,21 @@ / {
 	memory {
 		reg = <0x10000000 0x80000000>;
 	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		reg_usb_otg_vbus: regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			regulator-name = "usb_otg_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio4 15 0>;
+		};
+	};
 };
 
 &ecspi3 {
@@ -180,6 +195,14 @@ MX6QDL_PAD_KEY_ROW0__UART4_RX_DATA	0x1b0b1
 			>;
 		};
 
+		pinctrl_usbotg: usbotggrp {
+			fsl,pins = <
+				MX6QDL_PAD_GPIO_1__USB_OTG_ID		0x17059
+				MX6QDL_PAD_KEY_COL4__USB_OTG_OC		0x1b0b0
+				MX6QDL_PAD_KEY_ROW4__GPIO4_IO15		0x80000000
+			>;
+		};
+
 		pinctrl_usdhc2: usdhc2grp {
 			fsl,pins = <
 				MX6QDL_PAD_SD2_CMD__SD2_CMD		0x17059
@@ -225,6 +248,14 @@ &uart4 {
 	status = "disabled";
 };
 
+&usbotg {
+	vbus-supply = <&reg_usb_otg_vbus>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbotg>;
+	disable-over-current;
+	status = "disabled";
+};
+
 &usdhc2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_usdhc2>;