Merge branch 'acpi-conversion'

Merge branch 'acpi-conversion'

* acpi-conversion:
  ACPI / AC: Remove AC's proc directory.
  ideapad_laptop: convert ideapad device/driver to platform bus
  ideapad_laptop: remove ideapad_handle and ideapad_priv
  ideapad_laptop: convert internal function calls to use ideapad_private as parameter
  ideapad_laptop: introduce struct acpi_device pointer to ideapad_private structure
  ideapad_laptop: introduce #ifdef CONFIG_PM_SLEEP for PM specific code
  ACPI / AC: convert ACPI ac driver to platform bus