ARM: dts: rmobile: Add AVB PHY reset on V3M Eagle

Add EtherAVB PHY reset on V3M Eagle to let the AVB driver unreset the PHY.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/arm/dts/r8a77970-eagle.dts b/arch/arm/dts/r8a77970-eagle.dts
index 0c555b8..5b8b2f8 100644
--- a/arch/arm/dts/r8a77970-eagle.dts
+++ b/arch/arm/dts/r8a77970-eagle.dts
@@ -8,6 +8,7 @@
 
 /dts-v1/;
 #include "r8a77970.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "Renesas Eagle board based on r8a77970";
@@ -38,6 +39,7 @@
 	phy-handle = <&phy0>;
 	phy-mode = "rgmii-id";
 	status = "okay";
+	reset-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
 
 	phy0: ethernet-phy@0 {
 		rxc-skew-ps = <1500>;