lantiq: Add support for 2nd USB port on Fritz!Box 7320 and 7330

Enable support for 2nd USB port, which is available on Fritz!Box 7320
and 7330. It was run-tested on 7320 and 7330 as well.

Signed-off-by: Robert Resch <openwrt@webnmail.de>
Signed-off-by: Petr Štetiar <ynezz@true.cz>

target/linux/lantiq/files-4.14/arch/mips/boot/dts/FRITZ7320.dts

@@ -159,6 +159,14 @@
 	status = "okay";
 };
 
+&usb_phy1 {
+	status = "okay";
+};
+
 &usb0 {
 	status = "okay";
 };
+
+&usb1 {
+	status = "okay";
+};