LCD_KCAL: Color Control driver for Moto G

* Removed kcal_ctrl, i can't see any use in it
* Preconfigured with stock 255 255 255

e.g; echo 255 230 210 > /sys/devices/platform/kcal_ctrl.0/kcal

Signed-off-by: Blechd0se <alex.christ@hotmail.de>

Conflicts:
	arch/arm/mach-msm/Makefile
	arch/arm/mach-msm/board-8226.c
	drivers/video/msm/mdss/Kconfig
defconfig: set proper name

Also pumping up the read ahead value to 512.

Signed-off-by: Blechd0se <alex.christ@hotmail.de>