ARM: sun7i: dt: Add bindings for USB clocks

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun7i-a20.dtsi

@@ -305,6 +305,15 @@ ir1_clk: clk@01c200b4 {
 			clock-output-names = "ir1";
 		};
 
+		usb_clk: clk@01c200cc {
+			#clock-cells = <1>;
+		        #reset-cells = <1>;
+			compatible = "allwinner,sun4i-a10-usb-clk";
+			reg = <0x01c200cc 0x4>;
+			clocks = <&pll6 1>;
+			clock-output-names = "usb_ohci0", "usb_ohci1", "usb_phy";
+		};
+
 		spi3_clk: clk@01c200d4 {
 			#clock-cells = <0>;
 			compatible = "allwinner,sun4i-mod0-clk";