Added a new function mlx5_devx_cmd_query_lag() to query LAG
property from firmware including state/affinity/mode etc.
Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
Signed-off-by: Rongwei Liu <rongweil@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>