ARM: at91/dt: remove useless uhpck clock references from ehci defintions

The uhpck is useless for High-Speed communications, remove the reference
to this clock in all ehci definitions.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91sam9g45.dtsi

@@ -1300,8 +1300,8 @@
 			compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
 			reg = <0x00800000 0x100000>;
 			interrupts = <22 IRQ_TYPE_LEVEL_HIGH 2>;
-			clocks = <&utmi>, <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
-			clock-names = "usb_clk", "ehci_clk", "hclk", "uhpck";
+			clocks = <&utmi>, <&uhphs_clk>;
+			clock-names = "usb_clk", "ehci_clk";
 			status = "disabled";
 		};
 	};