Fixes incorrect comment on compressdev rte_comp_op structure element.
Comment needed to be updated to be compliant with the use of
chained mbufs.
Fixes: f87bdc1ddcf4 ("compressdev: add compression specific data")
Cc: stable@dpdk.org
Signed-off-by: Lee Daly <lee.daly@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>