Add the device ID for the PF of the NFP4000.  The device ID for the VF,
0x6003, is already present as PCI_DEVICE_ID_NETRONOME_NFP6000_VF.
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>