Since we still don't have RoCE support in mlx5, avoid
creating IB driver instance over Ethernet ports.
Signed-off-by: NMajd Dibbiny <majd@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>