Default print log to radio.

Change-Id: I940d25f7d5d5dd1ebb920019c8c92fc49b6af201
diff --git a/mbtk/mbtk_lib/src/mbtk_log.c b/mbtk/mbtk_lib/src/mbtk_log.c
index 54c107b..1606552 100755
--- a/mbtk/mbtk_lib/src/mbtk_log.c
+++ b/mbtk/mbtk_lib/src/mbtk_log.c
@@ -20,7 +20,8 @@
 #define LOG_VERBOSE 8
 
 static int tlog_fd = -1;
-static int syslog_radio_enable = 0;
+// Default for radio log.
+static int syslog_radio_enable = 2;
 static FILE* logfile = NULL;
 static int signal_fd = -1;