Sultan_defconfig: Refresh
pyramid: Add sysfs switch for basic color control (M7 colors)

*Cooler color calibration table is from HTC One M7

The sysfs switch allows switching between the old color configuration and the new one. Sysfs switch is located at /sys/module/mdp/parameters/mdp_gamma_cooler_colors. The cooler color profile is disabled by default. The sysfs switch can be written to on-the-go; turn the screen off and on to apply the new color profile.

Signed-off-by: Sultanxda <sultanxda@gmail.com>
pyramid: Add panel undervolt interface

Panel voltage can be changed on-the-go via the sysfs file /sys/module/board_pyramid_panel/parameters/panel_uv, where panel_uv is a value between 0 and 700mV to undervolt the panel by (stock panel voltage is 3100mV). After the sysfs control is written to with the desired undervolt value (as a multiple of 25mV), turn the screen off and on to apply the new voltage.

Default panel undervolt is 400mV.

Signed-off-by: Sultanxda <sultanxda@gmail.com>