RDMA/mlx5: Enable Data-Direct with Relaxed Ordering

Relaxed Ordering can improve performance in certain scenarios.

Enable it in the Data-Direct use case as well.

Link: https://patch.msgid.link/r/1221dcdda8061ba5f6bc3519044083c7438b257e.1755088503.git.leon@kernel.org


Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Gal Shalom <galshalom@Nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>