mvebu: fix LAN/WAN port assignment on ClearFog Base/Pro

The comments in code already describe the intended lan / wan assignment:
lan: switch
wan: standalone ethernet and sfp

Update the interface handles to match the comments, as observed with
OpenWRT-19.07-rc2 on a Clearfog Pro Rev 2.0.

This also matches the effective assignment on master, while the actual
interface names (ethX) are different due to the reassignment in
06_set_iface_mac, which is included in 19.07 but was dropped for master.

Signed-off-by: Josua Mayer <josua.mayer@jm0.eu>
[extend commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

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

@@ -50,16 +50,16 @@ marvell,axp-gp)
 	ucidef_set_interface_lan "eth0 eth1 eth2 eth3"
 	;;
 solidrun,clearfog*a1)
-	# eth0 is standalone ethernet
-	# eth1 is switch (-pro) or standalone ethernet (-base)
-	# eth2 is SFP
-	ucidef_set_interfaces_lan_wan "eth1" "eth0 eth2"
+	# eth2 is standalone ethernet
+	# eth0 is switch (-pro) or standalone ethernet (-base)
+	# eth1 is SFP
+	ucidef_set_interfaces_lan_wan "eth0" "eth2 eth1"
 
 	# if switch exists (clearfog-pro)
-	# switch port 5 is connected to eth1
+	# switch port 5 is connected to eth0
 	swconfig list 2>&1 | grep -q switch0 && \
 		ucidef_add_switch "switch0" \
-			"0:lan:5" "1:lan:4" "2:lan:3" "3:lan:2" "4:lan:1" "5u@eth1" "6:lan:6"
+			"0:lan:5" "1:lan:4" "2:lan:3" "3:lan:2" "4:lan:1" "5u@eth0" "6:lan:6"
 	;;
 *)
 	ucidef_set_interface_lan "eth0"