arm64: dts: renesas: condor: add EtherAVB pins

Add the (previously omitted) EtherAVB pin data to the Condor board's
device tree.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a77980-condor.dts

@@ -30,6 +30,9 @@ memory@48000000 {
 };
 
 &avb {
+	pinctrl-0 = <&avb_pins>;
+	pinctrl-names = "default";
+
 	phy-mode = "rgmii-id";
 	phy-handle = <&phy0>;
 	renesas,no-ether-link;
@@ -50,6 +53,11 @@ &extalr_clk {
 };
 
 &pfc {
+	avb_pins: avb {
+		groups = "avb_mdio", "avb_rgmii";
+		function = "avb";
+	};
+
 	scif0_pins: scif0 {
 		groups = "scif0_data";
 		function = "scif0";