ramips: add label MAC address for Mikrotik RB750Gr3

The device label contains:
E01: 74:4D:28:xx:xx:30
E05: 74:4D:28:xx:xx:34

The first value corresponds to the address set in hard_config 0x10.

That one is taken for the label MAC address.

Signed-off-by: Sven Roederer <freifunk@it-solutions.geroedel.de>

target/linux/ramips/mt7621/base-files/etc/board.d/02_network

@@ -230,9 +230,7 @@ ramips_setup_macs()
 	mediatek,ap-mt7621a-v60)
 		wan_mac=$(macaddr_add "$(mtd_get_mac_binary factory 0x5)" 1)
 		;;
-	mikrotik,rb750gr3)
-		wan_mac=$(macaddr_add "$(mtd_get_mac_binary hard_config 0x10)" 2)
-		;;
+	mikrotik,rb750gr3|\
 	mikrotik,rbm33g)
 		wan_mac=$(macaddr_add "$(mtd_get_mac_binary hard_config 0x10)" 2)
 		label_mac=$(mtd_get_mac_binary hard_config 0x10)