Added second OpenWrt routing packages feed. * one feed for batman-adv...

Added second OpenWrt routing packages feed. * one feed for batman-adv (revision of latest supported COMPAT_VERSION 14 version) * one feed for all other packages than batman-adv (current revision)

Signed-off-by: Steffen Pankratz <kratz00@gmx.de>
Reviewed-by: Tobias Klaus <tk+ff@meskal.net>
Reviewed-by: Tim Niemeyer <tim.niemeyer@mastersword.de>