net/mlx5: Update mlx5_ifc with DEVX UCTX capabilities bits

Expose device capabilities for DEVX user context, it includes which caps
the device is supported and a matching bit to set as part of user
context creation.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>