Fix invalid static variable assignment

Change-Id: I3e93efe1975070218d70e878e78ec197af1d121d
diff --git a/utils/misc/src/main/java/org/onlab/packet/MacAddress.java b/utils/misc/src/main/java/org/onlab/packet/MacAddress.java
index a040b69..4da6fe5 100644
--- a/utils/misc/src/main/java/org/onlab/packet/MacAddress.java
+++ b/utils/misc/src/main/java/org/onlab/packet/MacAddress.java
@@ -26,15 +26,14 @@
 public class MacAddress {
 
     /**
-     * Dummy MAC address.
-     * We use the first MAC address in ONOS OUI range as a dummy MAC address.
-     */
-    public static final MacAddress NONE = MacAddress.ONOS;
-    /**
      * First MAC address in ONOS OUI range.
      */
     public static final MacAddress ONOS = valueOf("a4:23:05:00:00:00");
     /**
+     * Dummy MAC address. We use the first MAC address in ONOS OUI range as the dummy MAC address.
+     */
+    public static final MacAddress NONE = ONOS;
+    /**
      * ONOS LLDP MAC address with multicast bit set.
      */
     public static final MacAddress ONOS_LLDP = valueOf("a5:23:05:00:00:01");