core: reimplement logging using ndn-cxx's facility

Change-Id: Ifc7c5d70a61ad405dc1f1adfa522a2c0ad1586ab
Refs: #4580
diff --git a/daemon/face/udp-channel.cpp b/daemon/face/udp-channel.cpp
index 209aa70..3d6e6b8 100644
--- a/daemon/face/udp-channel.cpp
+++ b/daemon/face/udp-channel.cpp
@@ -31,7 +31,7 @@
 namespace nfd {
 namespace face {
 
-NFD_LOG_INIT("UdpChannel");
+NFD_LOG_INIT(UdpChannel);
 
 namespace ip = boost::asio::ip;