Merge pull request #3885 from Michael0066/master

ulog:fixed compile err

components/utilities/ulog/syslog/syslog.c

@@ -11,6 +11,7 @@
 #include <stdarg.h>
 #include <ulog.h>
 #include <rthw.h>
+#include <stdint.h>
 #include "syslog.h"
 
 #ifdef ULOG_OUTPUT_FLOAT