ipq806x: provide label MAC address

This patch adds the label MAC address for several devices in
ipq806x.

Signed-off-by: Adrian Schmutzler <[email protected]>

target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-c2600.dts

@@ -29,6 +29,7 @@
 		led-failsafe = &general;
 		led-running = &power;
 		led-upgrade = &general;
+		label-mac-device = &gmac2;
 	};
 
 	chosen {

target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8065-r7800.dts

@@ -34,6 +34,7 @@
 		led-failsafe = &power_amber;
 		led-running = &power_white;
 		led-upgrade = &power_amber;
+		label-mac-device = &gmac2;
 	};
 
 	chosen {