Harish Krupo authored Mar 11, 2019 and Harish Krupo committed Jun 19, 2019

When buffers with different color spaces are presented, a target
color space is picked by the compositor backend based on the color space
support available at the output. The backend uses the
set_output_colorspace hook to inform the renderer of the target
colorspace.
The renderer then uses this information to generate csc matrices for
each surface, to convert from the surface's source color space to the
target color space set by the compositor backend.

Signed-off-by: Harish Krupo <harish.krupo.kps@intel.com>