or1k: dts: Add ethoc device to SMP devicetree

This patch adds the ethoc device configuration to the OpenRISC basic SMP
device tree config.  This was tested with qemu.

Signed-off-by: Stafford Horne <shorne@gmail.com>

arch/openrisc/boot/dts/simple_smp.dts

@@ -60,4 +60,10 @@
 		clock-frequency = <20000000>;
 	};
 
+	enet0: ethoc@92000000 {
+		compatible = "opencores,ethoc";
+		reg = <0x92000000 0x800>;
+		interrupts = <4>;
+		big-endian;
+	};
 };