Add glibc support(default)

Change-Id: I7675edcf14df8707ecd424a962e4cc464a4c6ae4
diff --git a/mbtk/aboot-tiny/jacana/jacana_clock_posix.c b/mbtk/aboot-tiny/jacana/jacana_clock_posix.c
new file mode 100755
index 0000000..250efc4
--- /dev/null
+++ b/mbtk/aboot-tiny/jacana/jacana_clock_posix.c
@@ -0,0 +1,22 @@
+#include <time.h>
+#include <sys/time.h>
+
+#include "jacana_clock.h"
+
+/*---------------------------------------------------------------------------*/
+int
+jacana_clock_init(void)
+{
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+unsigned
+jacana_clock_get(void)
+{
+  struct timespec ts;
+
+  clock_gettime(CLOCK_MONOTONIC, &ts);
+
+  return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
+}
+/*---------------------------------------------------------------------------*/