snb_pci2phy_map_init
int snb_pci2phy_map_init(int devid);
ret = snb_pci2phy_map_init(p->pci_id);
ret = snb_pci2phy_map_init(0x7814); /* IRP */
ret = snb_pci2phy_map_init(0x7817); /* M2PCIe */