drm/i915: Report the current DPLL0 vco on SKL/KBL

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463172100-24715-7-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

drivers/gpu/drm/i915/intel_display.c

@@ -5240,8 +5240,13 @@ static void intel_update_cdclk(struct drm_device *dev)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
 	dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
-	DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
-			 dev_priv->cdclk_freq);
+
+	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
+		DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz, VCO: %d MHz\n",
+				 dev_priv->cdclk_freq, dev_priv->skl_vco_freq);
+	else
+		DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
+				 dev_priv->cdclk_freq);
 
 	/*
 	 * 9:0 CMBUS [sic] CDCLK frequency (cdfreq):