drm/i915/display: Decrease log level

Converting error to debug print if sink fails to configure scrambling or
TMDS bit clock ratio. In this case, we are timing out while disabling
the scrambling and setting the SCDC ratio, as there is no response
to the I2C SCDC write from the sink device. Error isn't due to something
wrong done from driver side.
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200302213807.6488-1-swati2.sharma@intel.comReviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

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

@@ -3565,7 +3565,8 @@ static void intel_enable_ddi_hdmi(struct intel_encoder *encoder,
 	if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
 					       crtc_state->hdmi_high_tmds_clock_ratio,
 					       crtc_state->hdmi_scrambling))
-		DRM_ERROR("[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n",
+		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Failed to configure sink "
+			      "scrambling/TMDS bit clock ratio\n",
 			       connector->base.id, connector->name);
 
 	/* Display WA #1143: skl,kbl,cfl */