libpsync: add PSync and update NLSR dependency

refs: #4827

Change-Id: I83df4c0532258f490b855335bf94600cc71d7a65
diff --git a/nlsr/debian/control b/nlsr/debian/control
index b4bfd75..e5b147a 100644
--- a/nlsr/debian/control
+++ b/nlsr/debian/control
@@ -7,6 +7,7 @@
  pkg-config (>= 0.26),
  libndn-cxx-dev (>= 0.6.2),
  libchronosync-dev (>= 0.5.1),
+ libpsync-dev (>= 0.1.0),
  libboost-all-dev (>= 1.53.0),
  python-sphinx (>= 1.1.3),
  git