mediatek: fix IPv4 address missing on interface in failsafe mode for cudy ap3000-v1

cudy ap3000-v1 did not work correctly in failsafe mode
because the address 192.168.1.1 was missing on the eth0 inteface.
it was reachable via it's IPv6 link-local address however.
this commit fixes the issue.

Fixes: openwrt/openwrt#20750
Signed-off-by: Martin Nadvornik <[email protected]>
Link: openwrt/openwrt#21172
Signed-off-by: Hauke Mehrtens <[email protected]>
(cherry picked from commit e5cd646)

Author: mnadvornik

target/linux/mediatek/base-files/lib/preinit/05_set_preinit_iface

@@ -10,6 +10,7 @@ set_preinit_iface() {
 		ip link set eth1 up
 		ifname=eth1
 		;;
+	cudy,ap3000-v1|\
 	cudy,ap3000outdoor-v1|\
 	cudy,re3000-v1|\
 	ubnt,unifi-6-lr|\