Being sent a null config is not an error

Change-Id: I032a06008668005cc44fcf24fde3e6dbd39943bd
diff --git a/providers/lldp/src/main/java/org/onosproject/provider/lldp/impl/LldpLinkProvider.java b/providers/lldp/src/main/java/org/onosproject/provider/lldp/impl/LldpLinkProvider.java
index bd81a99..37fedba 100644
--- a/providers/lldp/src/main/java/org/onosproject/provider/lldp/impl/LldpLinkProvider.java
+++ b/providers/lldp/src/main/java/org/onosproject/provider/lldp/impl/LldpLinkProvider.java
@@ -792,7 +792,7 @@
 
         private synchronized void reconfigureSuppressionRules(SuppressionConfig cfg) {
             if (cfg == null) {
-                log.error("Suppression Config is null.");
+                log.debug("Suppression Config is null.");
                 return;
             }