batman-adv: Switch proto scripts to new prefixes

batman-adv: Switch proto scripts to new prefixes

The '-m' option to select the mesh interface or vlan interfaces was
replaced with device type specific subcommand prefixes:

* meshif <netdev>
* vlan <vdev>
* meshif <netdev> vid <vid>
* hardif <netdev>

This change should also be made in the proto script to allow batctl to drop
the support of '-m' completely in the future.

Signed-off-by: Sven Eckelmann <sven@narfation.org>