ARM: mx5: dts: Enable USB OTG on M53EVK

Add USB OTG support to M53EVK instead of just USB gadget.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx53-m53evk.dts

@@ -84,6 +84,15 @@ reg_usbh1_vbus: regulator@3 {
 			regulator-max-microvolt = <5000000>;
 			gpio = <&gpio1 2 0>;
 		};
+
+		reg_usb_otg_vbus: regulator@4 {
+			compatible = "regulator-fixed";
+			reg = <4>;
+			regulator-name = "usb_otg_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio1 4 0>;
+		};
 	};
 
 	sound {
@@ -168,6 +177,12 @@ MX53_PAD_GPIO_3__USBOH3_USBH1_OC	0x80000000
 			>;
 		};
 
+		pinctrl_usbotg: usbotggrp {
+			fsl,pins = <
+				MX53_PAD_GPIO_4__GPIO1_4		0x000b0
+			>;
+		};
+
 		led_pin_gpio: led_gpio@0 {
 			fsl,pins = <
 				MX53_PAD_PATA_DATA8__GPIO2_8		0x80000000
@@ -351,6 +366,10 @@ &usbh1 {
 };
 
 &usbotg {
-	dr_mode = "peripheral";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbotg>;
+	dr_mode = "otg";
+	vbus-supply = <&reg_usb_otg_vbus>;
+	disable-over-current;
 	status = "okay";
 };