jni: Android-specific custom logger for NFD

Change-Id: I4d98a58b8320735e40b5da3d358b9c71b558d995
Refs: #2508
diff --git a/app/src/main/jni/nfd-android/config.hpp b/app/src/main/jni/nfd-android/config.hpp
index 78b3f8b..f26c0f6 100644
--- a/app/src/main/jni/nfd-android/config.hpp
+++ b/app/src/main/jni/nfd-android/config.hpp
@@ -8,5 +8,6 @@
 #define HAVE_LIBRESOLV
 /*#undef HAVE_UNIX_SOCKETS*/
 #define DEFAULT_CONFIG_FILE "./nfd.conf"
+#define HAVE_CUSTOM_LOGGER 1
 
 #endif /* W_CONFIG_HPP_WAF */