libhwc2.1: Add functions for color managment

Some functions are added and
some functions are changed to virtual.
Those functions are implemented by
module source code.

Bug: 154275156

Signed-off-by: HyunKyung Kim <hk310.kim@samsung.com>
Change-Id: I2cbb068dc606cab9545dc029173bb3ac490fec83
6 files changed