daemon+rib: add proper #include line for NDNLPv2 tags

refs #3755

Change-Id: I3ab279405aca7c7139e8d0e8e662eb3ea7200045
diff --git a/daemon/face/generic-link-service.cpp b/daemon/face/generic-link-service.cpp
index d1536ce..a922cbe 100644
--- a/daemon/face/generic-link-service.cpp
+++ b/daemon/face/generic-link-service.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2015,  Regents of the University of California,
+ * Copyright (c) 2014-2016,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -24,6 +24,7 @@
  */
 
 #include "generic-link-service.hpp"
+#include <ndn-cxx/lp/tags.hpp>
 
 namespace nfd {
 namespace face {