nfd: Update to version 0.7.0

Change-Id: Ic08845a02c95d41c95423bec5fc9860e60e05abe
diff --git a/nfd/debian/control b/nfd/debian/control
index 268e702..32a8541 100644
--- a/nfd/debian/control
+++ b/nfd/debian/control
@@ -5,7 +5,7 @@
  dh-systemd (>= 1.5),
  python (>= 2.7.0),
  pkg-config (>= 0.26),
- libndn-cxx-dev (>= 0.6.6),
+ libndn-cxx-dev (>= 0.7.0),
  python-sphinx,
  libpcap-dev (>= 1.5.3),
  libboost-all-dev (>= 1.58.0),