netmap: add pci_device in netmap_bwrap_attach
netmap: add pci_device in netmap_bwrap_attach

* `pdev` needs to be set in netmap_adapter for the NIC/vport
to be make the buffers visible for the device.

luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap