Change mbtk toolchain to glibc.

Change-Id: I7346dfcca3bb3ff9f586cfafc09d04f16b6d2518
diff --git a/mbtk/liblynq_lib/lynq_chip_id.c b/mbtk/liblynq_lib/lynq_chip_id.c
index 26ba932..21ebd07 100755
--- a/mbtk/liblynq_lib/lynq_chip_id.c
+++ b/mbtk/liblynq_lib/lynq_chip_id.c
@@ -10,7 +10,7 @@
 {
     struct timeval tv;
     gettimeofday(&tv,NULL);
-    sprintf(time_t, "%lld", tv.tv_sec);
+    sprintf(time_t, "%ld", tv.tv_sec);
     return 0;
 }