Merge branch 'pci/devres'

Merge branch 'pci/devres'

- Unmap MMIO mappings in pci_iounmap() to avoid a leak when
  ARCH_HAS_GENERIC_IOPORT_MAP is defined (Philipp Stanner)

- Move pci_iomap.c to drivers/pci/ since it's all PCI-related (Philipp
  Stanner)

- Move other PCI-related devres code from lib/devres.c to drivers/pci/
  (Philipp Stanner)

- Move other devres code from pci.c to devres.c (Philipp Stanner)

* pci/devres:
  PCI: Move devres code from pci.c to devres.c
  PCI: Move PCI-specific devres code to drivers/pci/
  PCI: Move pci_iomap.c to drivers/pci/
  pci_iounmap(): Fix MMIO mapping leak