net/mlx5: Introduce IFC bits for migratable

Introduce IFC related capabilities to enable setting VF to be able to
perform live migration. e.g.: to be migratable.

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Acked-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>