Merge branch 'pci/controller/vmd'

- Add pci_enable_link_state() to allow drivers to enable ASPM link state
  (Michael Bottini)

- Add quirk to enable all ASPM link states and program LTR for devices
  below VMD (David E. Box)

* pci/controller/vmd:
  PCI: vmd: Add quirk to configure PCIe ASPM and LTR
  PCI: vmd: Create feature grouping for client products
  PCI: vmd: Use PCI_VDEVICE in device list
  PCI/ASPM: Add pci_enable_link_state()