VPP-580: Host Interface created via Command Line Arg is misnamed

VPP-580: Host Interface created via Command Line Arg is misnamed

Host interfaces created via the command-line arguments are missed named
(i.e. - UnknownEthernet0 instead of af_packet0). In DPDK 16.11, they
changed the driver names from eth_xxx to net_xxx. However, looks like
the AF_PACKET driver still returns "AF_PACKET PMD" as the driver name
in the rte_eth_dev_info_get(..) call. I modified the driver name look
table in vnet/devices/dpdk/dpdk.h to revert the name back.

Change-Id: I2b0a9f6b4d5245b76548027891d40f81a56b230d
Signed-off-by: Billy McFall <bmcfall@redhat.com>