ARM: zynq: DT: Add ethernet phy reset information

Added phy reset gpio information for gem0.

Signed-off-by: Punnaiah Choudary Kalluri <punnaia@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynq-zc702.dts

@@ -91,6 +91,8 @@
 	phy-handle = <&ethernet_phy>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_gem0_default>;
+	phy-reset-gpio = <&gpio0 11 0>;
+	phy-reset-active-low;
 
 	ethernet_phy: ethernet-phy@7 {
 		reg = <7>;