drm/i915/dp_mst: Use connector DSC DPCD in intel_dp_mst_mode_valid_ctx()

Use the connector's DSC DPCD capabilities in
intel_dp_mst_mode_valid_ctx().
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231006133727.1822579-19-imre.deak@intel.com

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -996,14 +996,14 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 	}
 
 	if (DISPLAY_VER(dev_priv) >= 10 &&
-	    drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd)) {
+	    drm_dp_sink_supports_dsc(intel_connector->dp.dsc_dpcd)) {
 		/*
 		 * TBD pass the connector BPC,
 		 * for now U8_MAX so that max BPC on that platform would be picked
 		 */
 		int pipe_bpp = intel_dp_dsc_compute_max_bpp(intel_connector, U8_MAX);
 
-		if (drm_dp_sink_supports_fec(intel_dp->fec_capable)) {
+		if (drm_dp_sink_supports_fec(intel_connector->dp.fec_capability)) {
 			dsc_max_compressed_bpp =
 				intel_dp_dsc_get_max_compressed_bpp(dev_priv,
 								    max_link_clock,