[ONOS-2715]implement MW icon extension for onos

1.add a new device type named "MW"

Change-Id: If9084426f380918416490c29f93d2caa75b0fb55
diff --git a/core/api/src/main/java/org/onosproject/net/Device.java b/core/api/src/main/java/org/onosproject/net/Device.java
index 80e6e48..d900182 100644
--- a/core/api/src/main/java/org/onosproject/net/Device.java
+++ b/core/api/src/main/java/org/onosproject/net/Device.java
@@ -26,7 +26,8 @@
      * Coarse classification of the type of the infrastructure device.
      */
     public enum Type {
-        SWITCH, ROUTER, ROADM, OTN, ROADM_OTN, FIREWALL, BALANCER, IPS, IDS, CONTROLLER, VIRTUAL, FIBER_SWITCH, OTHER
+        SWITCH, ROUTER, ROADM, OTN, ROADM_OTN, FIREWALL, BALANCER, IPS, IDS, CONTROLLER,
+        VIRTUAL, FIBER_SWITCH, MICROWAVE, OTHER
     }
 
     /**