net: dsa: mv88e6xxx: add MDB support

Add support for the MDB operations. This consists of
loading/purging/dumping multicast addresses for a given port in the ATU.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed