ARM: dts: rockchip: add clock-cells for usb phy nodes

Add the #clock-cells properties for the usbphy nodes as they
provide the pll-clocks now.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index c5d7e61..6abbab6 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -968,6 +968,7 @@
 			reg = <0x320>;
 			clocks = <&cru SCLK_OTGPHY0>;
 			clock-names = "phyclk";
+			#clock-cells = <0>;
 		};
 
 		usbphy1: usb-phy1 {
@@ -975,6 +976,7 @@
 			reg = <0x334>;
 			clocks = <&cru SCLK_OTGPHY1>;
 			clock-names = "phyclk";
+			#clock-cells = <0>;
 		};
 
 		usbphy2: usb-phy2 {
@@ -982,6 +984,7 @@
 			reg = <0x348>;
 			clocks = <&cru SCLK_OTGPHY2>;
 			clock-names = "phyclk";
+			#clock-cells = <0>;
 		};
 	};