ARM: dts: mmp2: rename the USB PHY node

This device is not an OTG phy, it's a regular USB HS phy. Follow the
generic node name recommendation, and rename it to "usb-phy".
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>

arch/arm/boot/dts/mmp2.dtsi

@@ -117,7 +117,7 @@ intcmux55: interrupt-controller@d4282188 {
 				mrvl,intc-nr-irqs = <2>;
 			};
 
-			usb_otg_phy0: usb-otg-phy@d4207000 {
+			usb_phy0: usb-phy@d4207000 {
 				compatible = "marvell,mmp2-usb-phy";
 				reg = <0xd4207000 0x40>;
 				#phy-cells = <0>;
@@ -130,7 +130,7 @@ usb_otg0: usb-otg@d4208000 {
 				interrupts = <44>;
 				clocks = <&soc_clocks MMP2_CLK_USB>;
 				clock-names = "USBCLK";
-				phys = <&usb_otg_phy0>;
+				phys = <&usb_phy0>;
 				phy-names = "usb";
 				status = "disabled";
 			};