jf kernel: brighter, fading LED

Change-Id: Idac135503a37daeb09823c00c1dffb7c4caaea74
leds: add LED control (fading & brightness)

(thx AndreiLux)

Conflicts:
	drivers/leds/leds-an30259a.c
Update Conservative CPU GOV. fix min sampling time, and other fixes.
alucard cpu governor: removed useless checking code
darkness, nightmare cpu governors: removed useless checking code