The Kunpeng920 and Kunpeng930 don't support parse MPLS packet, so
remove the type from supported flow items.
Fixes: fcba820d9b ("net/hns3: support flow director")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>