Packet was corrupted when TSO requested without CSUM update.
Enables CSUM automatically if only TSO requested.
Fixes: 2aa8444b0084 ("vdpa/mlx5: support stateless offloads")
Cc: stable@dpdk.org
Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>