The tx_burst routine supporting multi-segment packets with
legacy MPW and without inline was missed, and there was no
valid selection for these options, patch adds the missing
routine.
Fixes: 82e75f8323 ("net/mlx5: fix legacy multi-packet Tx descriptors")
Cc: stable@dpdk.org
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>