vDPA/ifcvf: reuse pre-defined macros for device ids and vendor ids

This commit would reuse pre-defined macros for ifcvf device ids
and vendor ids

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/20210510081015.4212-3-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>