[RFC 7/9] net/mlx5/hws: add flex item modify field implementation

Add flex item modify field HWS implementation. The minimum modify boundary is one byte. Signed-off-by: Rongwei Liu --- doc/guides/nics/mlx5.rst| 1 + drivers/common/mlx5/mlx5_prm.h | 1 + drivers/net/mlx5/mlx5_flow.h| 3 + drivers/net/mlx5/mlx5_flow_dv.c | 165

[RFC 7/9] net/mlx5/hws: add flex item modify field implementation

Add flex item modify field HWS implementation. The minimum modify boundary is one byte. Signed-off-by: Rongwei Liu --- doc/guides/nics/mlx5.rst| 1 + drivers/common/mlx5/mlx5_prm.h | 1 + drivers/net/mlx5/mlx5_flow.h| 3 + drivers/net/mlx5/mlx5_flow_dv.c | 164