mako LCD: keep RGB custom colors alive after screen off/on

When the back-light turns back on, reset the RGB values set in
sysfs (/sys/devices/platform/kcal_ctrl.0/kcal)

Signed-off-by: morfic <morfic@gmail.com>
lm3530: Add a toggle for the CABC PWM
video: lm3530_bl: Introduce new tunables to control LED driver

- min_br: sets the mininum brightness level (2-114)
- max_br: sets the maximum brightness level (2-114)
- br_mode: sets the linear (default 1) or exponential (0) brightness
mapping mode.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>

Conflicts:
	arch/arm/mach-msm/lge/mako/board-mako-display.c