drm/i915: Pass the whole atomic state to intel_color_prepare_commit()

We'll have need to examine both the old and new crtc states in
intel_color_prepare_commit(), so let's just pass in the whole
atomic state.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240611133344.30673-6-ville.syrjala@linux.intel.com


Reviewed-by: Jani Nikula <jani.nikula@intel.com>