drm/edid: abstract connector ELD clearing

Preparation for future work. No functional changes.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/95e83e7a62566b65a56c8cb5038ddf0c6b8e5e95.1509545641.git.jani.nikula@intel.com

drivers/gpu/drm/drm_edid.c

@@ -3829,6 +3829,18 @@ void drm_edid_get_monitor_name(struct edid *edid, char *name, int bufsize)
 }
 EXPORT_SYMBOL(drm_edid_get_monitor_name);
 
+static void clear_eld(struct drm_connector *connector)
+{
+	memset(connector->eld, 0, sizeof(connector->eld));
+
+	connector->latency_present[0] = false;
+	connector->latency_present[1] = false;
+	connector->video_latency[0] = 0;
+	connector->audio_latency[0] = 0;
+	connector->video_latency[1] = 0;
+	connector->audio_latency[1] = 0;
+}
+
 /**
  * drm_edid_to_eld - build ELD from EDID
  * @connector: connector corresponding to the HDMI/DP sink
@@ -3846,14 +3858,7 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
 	int mnl;
 	int dbl;
 
-	memset(eld, 0, sizeof(connector->eld));
-
-	connector->latency_present[0] = false;
-	connector->latency_present[1] = false;
-	connector->video_latency[0] = 0;
-	connector->audio_latency[0] = 0;
-	connector->video_latency[1] = 0;
-	connector->audio_latency[1] = 0;
+	clear_eld(connector);
 
 	if (!edid)
 		return;