staging: vboxvideo: Use PCI_DEVICE() for our pci_id table

Use PCI_DEVICE() for our pci_id table and also simplify the terminating
entry tio just "{ }".

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>