ARM: dts: berlin: Enable ethernet on Sony NSZ-GS7

Marvell Berlin BG2 based Sony NSZ-GS7 has one ethernet controller
connected to rear RJ45 jack. Enable it by default.
Tested-by: Antoine Ténart <antoine.tenart@free-electrons.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts

@@ -26,4 +26,6 @@ memory {
 	};
 };
 
+&eth1 { status = "okay"; };
+
 &uart0 { status = "okay"; };