ARM: dts: uniphier: Add USB3 controller nodes

Add USB3 controller nodes including usb-core, resets, regulator, ss-phy
and hs-phy. This supports for Pro4, PXs2 and the boards.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/boot/dts/uniphier-pro4-ref.dts

@@ -88,6 +88,14 @@
 	};
 };
 
+&usb0 {
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+};
+
 &nand {
 	status = "okay";
 };