net/mlx5: Add support to create SQ and CQ for ASO

Add a separate API to create SQ and CQ for advanced steering
operations (ASO).

Since the mlx5_en API to create these resources is strongly coupled
with netdev channels and datapath elements, this API provides an
alternative for creating send queues that are used for ASO.

Currently the API allows creating channels with 2 wqbbs only - meaning
the support will be for a single ACCESS_ASO wqe with data at a time.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Ariel Levkovich <lariel@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>