Javadoc fixes

- fix missing Javadoc @param and @throw annotations
- enable checkstyle checks for method javadocs on non-private methods

Change-Id: I9a370419a699bab3225d85f2f641927600b9f11c
diff --git a/utils/misc/src/main/java/org/onlab/packet/pim/PIMHello.java b/utils/misc/src/main/java/org/onlab/packet/pim/PIMHello.java
index 2f0c369..567a3bd 100644
--- a/utils/misc/src/main/java/org/onlab/packet/pim/PIMHello.java
+++ b/utils/misc/src/main/java/org/onlab/packet/pim/PIMHello.java
@@ -91,6 +91,11 @@
 
     /**
      * XXX: This is deprecated, DO NOT USE, use the deserializer() function instead.
+     *
+     * @param data bytes to deserialize
+     * @param offset offset to start deserializing from
+     * @param length length of the data to deserialize
+     * @return nothing
      */
     public IPacket deserialize(final byte[] data, final int offset,
                                final int length) {