mfd: omap-usb-host: Use clock names as per function for reference clocks

Use a meaningful name for the reference clocks so that it indicates the
function.

Update the OMAP4+ USB Host node as well to be in sync with the changes.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

arch/arm/boot/dts/omap4.dtsi

@@ -697,6 +697,12 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;
+			clocks = <&init_60m_fclk>,
+				 <&xclk60mhsp1_ck>,
+				 <&xclk60mhsp2_ck>;
+			clock-names = "refclk_60m_int",
+				      "refclk_60m_ext_p1",
+				      "refclk_60m_ext_p2";
 
 			usbhsohci: ohci@4a064800 {
 				compatible = "ti,ohci-omap3", "usb-ohci";