Merge branch 'pci/pwrctrl'

Merge branch 'pci/pwrctrl'

- Rename pwrseq, tc9563, and slot driver structs, variables, and functions
  for consistency (Bjorn Helgaas)

- Add power_on/off callbacks with generic signature to pwrseq, tc9563, and
  slot drivers so they can be used by pwrctrl core (Manivannan Sadhasivam)

- Add interfaces to create and destroy pwrctrl devices (Krishna Chaitanya
  Chundru)

- Add interfaces to power devices on and off (Manivannan Sadhasivam)

- Switch to pwrctrl interfaces to create, destroy, and power on/off
  devices, calling them from host controller drivers instead of the PCI
  core (Manivannan Sadhasivam)

- Drop qcom .assert_perst() callbacks since this is now done by the
  controller driver instead of the pwrctrl driver (Manivannan Sadhasivam)

- Add PCIe M.2 connector support to the slot pwrctrl driver (Manivannan
  Sadhasivam)

- Create pwrctrl devices for devicetree PCIe M.2 connector nodes
  (Manivannan Sadhasivam)

* pci/pwrctrl:
  PCI/pwrctrl: Create pwrctrl device if graph port is found
  PCI/pwrctrl: Add PCIe M.2 connector support
  PCI: Drop the assert_perst() callback
  PCI: qcom: Drop the assert_perst() callbacks
  PCI/pwrctrl: Switch to pwrctrl create, power on/off, destroy APIs
  PCI/pwrctrl: Add APIs to power on/off pwrctrl devices
  PCI/pwrctrl: Add APIs to create, destroy pwrctrl devices
  PCI/pwrctrl: Add 'struct pci_pwrctrl::power_{on/off}' callbacks
  PCI/pwrctrl: pwrseq: Factor out power on/off code to helpers
  PCI/pwrctrl: slot: Factor out power on/off code to helpers
  PCI/pwrctrl: tc9563: Rename private struct and pointers for consistency
  PCI/pwrctrl: tc9563: Add local variables to reduce repetition
  PCI/pwrctrl: tc9563: Clean up whitespace
  PCI/pwrctrl: tc9563: Use put_device() instead of i2c_put_adapter()
  PCI/pwrctrl: slot: Rename private struct and pointers for consistency
  PCI/pwrctrl: pwrseq: Rename private struct and pointers for consistency

# Conflicts:
#	drivers/pci/bus.c