arm64: dts: rockchip: fix usb2phy nodename for rk3588

usb2-phy should be named usb2phy according to the DT binding,
so let's fix it up accordingly.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20240408225109.128953-5-sebastian.reichel@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588s.dtsi

@@ -599,7 +599,7 @@ usb2phy2_grf: syscon@fd5d8000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		u2phy2: usb2-phy@8000 {
+		u2phy2: usb2phy@8000 {
 			compatible = "rockchip,rk3588-usb2phy";
 			reg = <0x8000 0x10>;
 			interrupts = <GIC_SPI 391 IRQ_TYPE_LEVEL_HIGH 0>;
@@ -624,7 +624,7 @@ usb2phy3_grf: syscon@fd5dc000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		u2phy3: usb2-phy@c000 {
+		u2phy3: usb2phy@c000 {
 			compatible = "rockchip,rk3588-usb2phy";
 			reg = <0xc000 0x10>;
 			interrupts = <GIC_SPI 392 IRQ_TYPE_LEVEL_HIGH 0>;