[ONOS-3904] Derived data type and formatting fixes

Change-Id: I1d68899e0056fa0db6322e83f7e9d3ff9b3b1ee0
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/ParsableDataType.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/ParsableDataType.java
index 0e2366b..9d2cfb0 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/ParsableDataType.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/ParsableDataType.java
@@ -222,7 +222,12 @@
     /**
      * Identifies the YANG organization parsed data.
      */
-    ORGANIZATION_DATA;
+    ORGANIZATION_DATA,
+
+    /**
+     * Identifies the derived data type.
+     */
+    DERIVED;
 
     /**
      * Returns the YANG construct keyword corresponding to enum values.
@@ -315,6 +320,8 @@
                 return "value";
             case DEFAULT_DATA:
                 return "default";
+            case DERIVED:
+                return "derived";
             default:
                 return "yang";
         }