leds-an30259a: Blinking control

Conflicts:

	drivers/leds/leds-an30259a.c
led-control: Aquire brightness, drop blink rate control from user-space
led-control: Correct colour scaling and user lowpower

Correctly scale the display colour depending on configured brightness, which
is now also updated in userspace depending on Samsung's brightness detection.
mdnie-control: Brightness update for EA8061 driver
ea8061: Allow manual brightness to 300 candela
abb-control: Fix offset in slice lookup