ARM: dts: sun8i: Enable USB DRC on Ippo Q8H-A23 tablets

Enable the otg controller on Ippo Q8H tablets, for now it is enabled
in host-only mode, because true OTG support requires support for
detecting and enabling Vbus through the axp221 pmic.

For this to work the Vbus on the port must be enabled by u-boot,
or a powered hub must be used.

Signed-off-by: Hans de Goede <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>

arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts

···
 	pinctrl-0 = <&r_uart_pins_a>;
 	status = "okay";
 };
+
+&usb_otg {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usbphy {
+	status = "okay";
+};