drm/amd/display: Set VSC SDP Colorimetry same way for MST and SST

The previous check for the is_vsc_sdp_colorimetry_supported flag
for MST sink signals did nothing. Simplify the code and use the
same check for MST and SST.

Cc: stable@vger.kernel.org
Reviewed-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -6325,15 +6325,9 @@ create_stream_for_sink(struct drm_connector *connector,
 		// should decide stream support vsc sdp colorimetry capability
 		// before building vsc info packet
 		//
-		stream->use_vsc_sdp_for_colorimetry = false;
-		if (aconnector->dc_sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
-			stream->use_vsc_sdp_for_colorimetry =
-				aconnector->dc_sink->is_vsc_sdp_colorimetry_supported;
-		} else {
-			if (stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 &&
-			    stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED)
-				stream->use_vsc_sdp_for_colorimetry = true;
-		}
+		stream->use_vsc_sdp_for_colorimetry = stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 &&
+						      stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED;
+
 		if (stream->out_transfer_func->tf == TRANSFER_FUNCTION_GAMMA22)
 			tf = TRANSFER_FUNC_GAMMA_22;
 		mod_build_vsc_infopacket(stream, &stream->vsc_infopacket, stream->output_color_space, tf);