Merge branch 'acpi-video'
* acpi-video:
ACPI: Add Toshiba NB100 to Vista _OSI blacklist
ACPI / video: Ignore BIOS initial backlight value for HP 250 G1
ACPI / video: Add Lenovo IdeaPad Yoga 13 to acpi video detect blacklist
thinkpad-acpi: fix handle locate for video and query of _BCL
ACPI / video: Do not register backlight if win8 and native interface exists
ACPI / video: seperate backlight control and event interface
backlight: introduce backlight_device_registered
ACPI: add missing win8 OSI comment to blacklist
ACPI: update win8 OSI blacklist
