gamma_control: add extensive control over the display gamma curve.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/misc/Kconfig
	drivers/misc/Makefile
gamma_control: fix permissions for userspace apps.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
gamma_control: change to stock values.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
mach-msm: board-mako-display.c: revert c1be92b796 partly - banding fix wasn't reverted, the yellow and green reinforce and blue subdue is reverted.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>