management: Adding nfd::FaceEventNotification data structure

Change-Id: I5b5b8b0f86a5ccd4ed82561aaf87118400a0ba33
Refs: #1244
diff --git a/src/encoding/tlv-nfd.hpp b/src/encoding/tlv-nfd.hpp
index cb89709..7a84951 100644
--- a/src/encoding/tlv-nfd.hpp
+++ b/src/encoding/tlv-nfd.hpp
@@ -45,7 +45,7 @@
   TotalIncomingDataCounter     = 144,
   TotalOutgoingInterestCounter = 146,
   TotalOutgoingDataCounter     = 147,
-  FaceEvent                    = 192,
+  FaceEventNotification        = 192,
   FaceEventKind                = 193,
 
   // Forwarder status