fff: depend on new fff- packages

- fff-batman-adv-legacy
- fff-fastd
- fff-firewall

Signed-off-by: Tim Niemeyer <tim@tn-x.org>
Reviewed-by: Tobias Klaus <tk+ff@meskal.net>
Tested-by: Christian Dresel <fff@chrisi01.de>
Reviewed-by: Christian Dresel <fff@chrisi01.de>
Reviewed-by: Jan Kraus <mayosemmel@gmail.com>