t4_os_find_pci_capability
t4_os_find_pci_capability(adapter, PCI_CAP_ID_VPD);
pcie_cap = t4_os_find_pci_capability(adap, PCI_CAP_ID_EXP);
pcie_cap = t4_os_find_pci_capability(adapter, PCI_CAP_ID_EXP);
pcie_cap = t4_os_find_pci_capability(adapter, PCI_CAP_ID_EXP);
int t4_os_find_pci_capability(struct adapter *, uint8_t);