Merge branch 'pci/endpoint'

- Fix ntb/vntb copy & paste errors (Baruch Siach)

- Add configfs sub-groups synchronously to avoid NULL pointer dereference
  when racing with removal (Liu Song)

- Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink()
  functions (Manikanta Maddireddy)

* pci/endpoint:
  PCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions
  PCI: endpoint: Avoid creating sub-groups asynchronously
  Documentation: PCI: endpoint: Fix ntb/vntb copy & paste errors