This patch adds support for controlling keyboard backlight via standard
linux led class interface (::kbd_backlight). It uses ACPI HKEY device with
MLCG and MLCS methods.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NFabio D'Urso <fabiodurso@hotmail.it>
Acked-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: NDarren Hart <dvhart@linux.intel.com>