net/mlx5: use Netlink to add/remove MAC addresses

net/mlx5: use Netlink to add/remove MAC addresses

VF devices are not able to receive traffic unless it fully requests it
though Netlink.  This will cause the request to be processed by the PF
which will add/remove the MAC address to the VF table if the VF is trusted.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>