Merge branch 'topic/alex-vfio-prep' into next

* topic/alex-vfio-prep:
  PCI: misc pci_reg additions
  PCI: create common pcibios_err_to_errno
  PCI: export pci_user functions for use by other drivers
  PCI: add ACS validation utility
  PCI: add PCI DMA source ID quirk

diff --cc drivers/pci/pci.c
Simple merge

diff --cc drivers/pci/pci.h
Simple merge

diff --cc include/linux/pci.h
Simple merge