ARM: dts: r8a7744: Add Ethernet AVB support

Add Ethernet AVB support for R8A7744 SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7744.dtsi

@@ -376,10 +376,16 @@ GIC_SPI 317 IRQ_TYPE_LEVEL_HIGH
 		};
 
 		avb: ethernet@e6800000 {
+			compatible = "renesas,etheravb-r8a7744",
+				     "renesas,etheravb-rcar-gen2";
 			reg = <0 0xe6800000 0 0x800>, <0 0xee0e8000 0 0x4000>;
+			interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 812>;
+			power-domains = <&sysc R8A7744_PD_ALWAYS_ON>;
+			resets = <&cpg 812>;
 			#address-cells = <1>;
 			#size-cells = <0>;
-			/* placeholder */
+			status = "disabled";
 		};
 
 		scifb1: serial@e6c30000 {