LCD_KCAL: Color Control driver for Nexus 5

Signed-off-by: aatjitra <aatjitra@gmail.com>

Conflicts:
	arch/arm/mach-msm/lge/board-8974-hammerhead.c

Signed-off-by: flar2 <asegaert@gmail.com>
Signed-off-by: aatjitra <aatjitra@gmail.com>
Signed-off-by: Ardi <aatjitra@gmail.com>
LCD KCAL: Fix Gamma max value issue

Major thanks to Yorici Vz for his tireless pursuit of perfection on Nexus 5
Color / Gamma :D

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: flar2 <asegaert@gmail.com>
Signed-off-by: aatjitra <aatjitra@gmail.com>
Signed-off-by: Ardi <aatjitra@gmail.com>