* acpi-cleanup: (21 commits)
ACPI / dock: fix error return code in dock_add()
ACPI / dock: Drop unnecessary local variable from dock_add()
ACPI / dock / PCI: Drop ACPI dock notifier chain
ACPI / dock: Do not check CONFIG_ACPI_DOCK_MODULE
ACPI / dock: Do not leak memory on falilures to add a dock station
ACPI: Drop ACPI bus notifier call chain
ACPI / dock: Rework the handling of notifications
ACPI / dock: Simplify dock_init_hotplug() and dock_release_hotplug()
ACPI / dock: Walk list in reverse order during removal of devices
ACPI / dock: Rework and simplify find_dock_devices()
ACPI / dock: Drop the hp_lock mutex from struct dock_station
ACPI: simplify acpiphp driver with new helper functions
ACPI: simplify dock driver with new helper functions
ACPI: Export acpi_(bay)|(dock)_match() from scan.c
ACPI: introduce two helper functions for _EJ0 and _LCK
ACPI: introduce helper function acpi_execute_simple_method()
ACPI: introduce helper function acpi_has_method()
ACPI / dock: simplify dock_create_acpi_device()
ACPI / dock: mark initialization functions with __init
ACPI / dock: drop redundant spin lock in dock station object
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