vDPA/ifcvf: enable Intel C5000X-PL virtio-net for vDPA

This commit enabled Intel FPGA SmartNIC C5000X-PL virtio-net
for vDPA

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210317094933.16417-3-lingshan.zhu@intel.com


Signed-off-by: Michael S. Tsirkin <mst@redhat.com>