ramips: fix network config for ravpower wd03

This device has only one ethernet port.

Signed-off-by: Matthias Badaire <mbadaire@gmail.com>
[add the existing eth0 as lan block, shorten commit message]
Signed-off-by: Mathias Kresin <dev@kresin.me>

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

@@ -143,6 +143,7 @@ ramips_setup_interfaces()
 	mzk-ex750np|\
 	na930|\
 	pbr-d1|\
+	ravpower,wd03|\
 	tama,w06|\
 	u25awf-h1|\
 	wli-tx4-ag300n|\
@@ -211,7 +212,6 @@ ramips_setup_interfaces()
 	ubnt-erx|\
 	ubnt-erx-sfp|\
 	ur-326n4g|\
-	ravpower,wd03|\
 	wrtnode|\
 	wrtnode2p | \
 	wrtnode2r | \