net/mlx5e: Allow creating mpwqe info without channel

Change the signature of mlx5e_rq_alloc_mpwqe_info from receiving channel
pointer to receive the NUMA node. This allows creating mpwqe_info in
context of different channels types.

Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>