net/i40e: report VLAN filter capability
net/i40e: report VLAN filter capability

The rte_eth_dev_set_vlan_offload function will check vlan rx offload
capability, the i40e vf has vlan filter feature but
DEV_RX_OFFLOAD_VLAN_FILTER is not set into the capability, that will
cause setting fail. So need to add this capability in
i40e_vf_representor_dev_infos_get function.

Fixes: e0cb96204b71 ("net/i40e: add support for representor ports")
Cc: stable@dpdk.org

Signed-off-by: Zhihong Peng <162b9a56f203c5263114c834d81148c08960c77e@intel.com>
Acked-by: Jeff Guo <62aa901f8680899d1e8b3d9b45cf4843c2976e1c@intel.com>

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