VDPA is a new interface that will be added in subsequent patches. It
uses mlx5 core devices and resources. Add an interface type for it.
Signed-off-by: NEli Cohen <eli@mellanox.com>
Reviewed-by: NParav Pandit <parav@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>