Now the manual brightness mode only applies to the LCD backlight and button and keyboard backlights are always managed automatically. Fixes bug b/2195798 (Passion capacitive key backlights don't always come on) This change only affects the framework based auto-brightness implementation. Hardware auto-brightness is not affected. Change-Id: Ib88310d642d498591e8879c8269d630ff3f7c8af Signed-off-by: Mike Lockwood <lockwood@android.com>