Merge branch 'pci/pm'

  - Always return devices to D0 when thawing to fix hibernation with
    drivers like mlx4 that used legacy power management (previously we only
    did it for drivers with new power management ops) (Dexuan Cui)

  - Clear PCIe PME Status even for legacy power management (Bjorn Helgaas)

  - Fix PCI PM documentation errors (Bjorn Helgaas)

  - Use dev_printk() for more power management messages (Bjorn Helgaas)

  - Apply D2 delay as milliseconds, not microseconds (Bjorn Helgaas)

  - Convert xen-platform from legacy to generic power management (Bjorn
    Helgaas)

  - Removed unused .resume_early() and .suspend_late() legacy power
    management hooks (Bjorn Helgaas)

  - Rearrange power management code for clarity (Rafael J. Wysocki)

  - Decode power states more clearly ("4" or "D4" really refers to
    "D3cold") (Bjorn Helgaas)

  - Notice when reading PM Control register returns an error (~0) instead
    of interpreting it as being in D3hot (Bjorn Helgaas)

  - Add missing link delays required by the PCIe spec (Mika Westerberg)

* pci/pm:
  PCI/PM: Move pci_dev_wait() definition earlier
  PCI/PM: Add missing link delays required by the PCIe spec
  PCI/PM: Add pcie_wait_for_link_delay()
  PCI/PM: Return error when changing power state from D3cold
  PCI/PM: Decode D3cold power state correctly
  PCI/PM: Fold __pci_complete_power_transition() into its caller
  PCI/PM: Avoid exporting __pci_complete_power_transition()
  PCI/PM: Fold __pci_start_power_transition() into its caller
  PCI/PM: Use pci_power_up() in pci_set_power_state()
  PCI/PM: Move power state update away from pci_power_up()
  PCI/PM: Remove unused pci_driver.suspend_late() hook
  PCI/PM: Remove unused pci_driver.resume_early() hook
  xen-platform: Convert to generic power management
  PCI/PM: Simplify pci_set_power_state()
  PCI/PM: Expand PM reset messages to mention D3hot (not just D3)
  PCI/PM: Apply D2 delay as milliseconds, not microseconds
  PCI/PM: Use pci_WARN() to include device information
  PCI/PM: Use PCI dev_printk() wrappers for consistency
  PCI/PM: Wrap long lines in documentation
  PCI/PM: Note that PME can be generated from D0
  PCI/PM: Make power management op coding style consistent
  PCI/PM: Run resume fixups before disabling wakeup events
  PCI/PM: Clear PCIe PME Status even for legacy power management
  PCI/PM: Correct pci_pm_thaw_noirq() documentation
  PCI/PM: Always return devices to D0 when thawing

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