arm64: dts: renesas: r8a77965: add usb3_phy node

This patch adds usb3_phy node for r8a77965.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a77965.dtsi

@@ -868,9 +868,16 @@ sdhi3: sd@ee160000 {
 		};
 
 		usb3_phy0: usb-phy@e65ee000 {
+			compatible = "renesas,r8a77965-usb3-phy",
+				     "renesas,rcar-gen3-usb3-phy";
 			reg = <0 0xe65ee000 0 0x90>;
+			clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>,
+				 <&usb_extal_clk>;
+			clock-names = "usb3-if", "usb3s_clk", "usb_extal";
+			power-domains = <&sysc 32>;
+			resets = <&cpg 328>;
 			#phy-cells = <0>;
-			/* placeholder */
+			status = "disabled";
 		};
 
 		usb3_peri0: usb@ee020000 {