IB/mlx5: Do not use hw_access_flags for be and CPU data

Avoid that sparse reports the following for the mlx5 driver:

drivers/infiniband/hw/mlx5/qp.c:2671:34: warning: invalid assignment: |=
drivers/infiniband/hw/mlx5/qp.c:2671:34:    left side has type restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2671:34:    right side has type int
drivers/infiniband/hw/mlx5/qp.c:2679:34: warning: invalid assignment: |=
drivers/infiniband/hw/mlx5/qp.c:2679:34:    left side has type restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2679:34:    right side has type int
drivers/infiniband/hw/mlx5/qp.c:2680:34: warning: invalid assignment: |=
drivers/infiniband/hw/mlx5/qp.c:2680:34:    left side has type restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2680:34:    right side has type int
drivers/infiniband/hw/mlx5/qp.c:2684:34: warning: invalid assignment: |=
drivers/infiniband/hw/mlx5/qp.c:2684:34:    left side has type restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2684:34:    right side has type int
drivers/infiniband/hw/mlx5/qp.c:2686:28: warning: cast from restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2686:28: warning: incorrect type in argument 1 (different base types)
drivers/infiniband/hw/mlx5/qp.c:2686:28:    expected unsigned int [usertype] val
drivers/infiniband/hw/mlx5/qp.c:2686:28:    got restricted __be32 [usertype]
drivers/infiniband/hw/mlx5/qp.c:2686:28: warning: cast from restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2686:28: warning: cast from restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2686:28: warning: cast from restricted __be32
drivers/infiniband/hw/mlx5/qp.c:2686:28: warning: cast from restricted __be32

This patch does not change any functionality.

Fixes: a60109dc

 ("IB/mlx5: Add support for extended atomic operations")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>