common/mlx5: fix DevX SQ object creation

common/mlx5: fix DevX SQ object creation

Fix wrong assignment of allow_multi_pkt_send_wqe
in mlx5_devx_cmd_create_sq.
The incorrect assignment was introduced in the initial
mlx5_devx_cmd_create_sq implementation.

sq_attr->flush_in_error_en is
mistakenly assigned to both allow_multi_pkt_send_wqe and
flush_in_error_en, it was detected during Windows PMD development.

The fix is simply assigning the right value in mlx5_devx_cmd_create_sq
to sq_attr->allow_multi_pkt_send_wqe

Fixes: ae18a1ae9692 ("net/mlx5: support Tx hairpin queues")
Cc: stable@dpdk.org
Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>