ARM: dts: sun8i: a711: Enable USB OTG

The TBS A711 has a micro-USB connector that can be used in OTG mode. Enable
it.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts

@@ -335,7 +335,14 @@ &uart1 {
 	status = "okay";
 };
 
+&usb_otg {
+	dr_mode = "otg";
+	status = "okay";
+};
+
 &usbphy {
+	usb0_id_det-gpios = <&pio 7 11 GPIO_ACTIVE_HIGH>; /* PH11 */
+	usb0_vbus-supply = <&reg_drivevbus>;
 	usb1_vbus_supply = <&reg_vmain>;
 	usb2_vbus_supply = <&reg_vmain>;
 	status = "okay";