arm: zynq: Add device-type property for zynq ethernet phy nodes

Mention device-type = "ethernet-phy", as qemu will need this in absence
of compatible.

Signed-off-by: Sai Pavan Boddu <saipava@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/boot/dts/zynq-parallella.dts

@@ -54,6 +54,7 @@
 		compatible = "ethernet-phy-id0141.0e90",
 		             "ethernet-phy-ieee802.3-c22";
 		reg = <0>;
+		device_type = "ethernet-phy";
 		marvell,reg-init = <0x3 0x10 0xff00 0x1e>,
 		                   <0x3 0x11 0xfff0 0xa>;
 	};