net/i40e: ensure vector mode is not used with QinQ
net/i40e: ensure vector mode is not used with QinQ

In rx vector mode, QinQ is not supported.
When hw_vlan_extend is set for QinQ ensure that
rx vector mode is not selected.

Fixes: 8e109464c022 ("i40e: allow vector Rx and Tx usage")
Cc: stable@dpdk.org

Signed-off-by: Bernard Iremonger <233eeff376ad0c06f66f06c5522ea3c4feb30d3b@intel.com>
Acked-by: Konstantin Ananyev <cbd5212b59ab42a210d72992d23a3aa17cfd3eaf@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk