drm/i915: Start using struct intel_csc_matrix for chv cgm csc

Convert chv_cgm_csc_convert_ctm() over to using the new
intel_csc_matrix structure. No pre/post offsets on this
hardware so only the coefficients get filled out.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329135002.3096-5-ville.syrjala@linux.intel.com


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