drm/i915: Utilize crtc_state->csc on chv

Store the chv cgm csc matrix in the crtc state as well. We
shall store it in the same place where we store the ilk+
pipe csc matrix (as opposed to the output csc matrix).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329135002.3096-7-ville.syrjala@linux.intel.com


Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>