ARM: dts: rockchip: Enable usb PHY on rk3288-evb board

Enable usb PHY for all usb ports on rk3288-evb.
Signed-off-by: NYunzhi Li <lyz@rock-chips.com>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-evb.dtsi

@@ -238,6 +238,10 @@
 	};
 };
 
+&usbphy {
+	status = "okay";
+};
+
 &usb_host0_ehci {
 	status = "okay";
 };