When the mask field of an rte_flow pattern item is NULL,
the default mask for that item type should be used.
Fixes: 5ef3b79fdf ("net/bnxt: support flow filter ops")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>