Since the API for controlling LED brightness and blinking is defined in
the LED core, move the related timer and work callbacks to the led-core.c,
and initialize them through a new led_core_init API.
Signed-off-by: NJacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: NAndrew Lunn <andrew@lunn.ch>
Acked-by: NPavel Machek <pavel@ucw.cz>