pci_get_vpd_readonly
if (pci_get_vpd_readonly(softc->dev, "PN", &part_num) == 0)
if (0 == pci_get_vpd_readonly(ocs->dev, "SN", &str)) {
DEVMETHOD(pci_get_vpd_readonly, pci_get_vpd_readonly_method),
return (pci_get_vpd_readonly(dev, kw, vptr));
DEVMETHOD(pci_get_vpd_readonly, vga_pci_get_vpd_readonly),