Fix code warning.

Change-Id: Ib11fb49f528d3688351ae349d5b4e307c28b3967
diff --git a/mbtk/mbtk_gnssd/gnss_utils.c b/mbtk/mbtk_gnssd/gnss_utils.c
index d114b4b..7fb9c3e 100755
--- a/mbtk/mbtk_gnssd/gnss_utils.c
+++ b/mbtk/mbtk_gnssd/gnss_utils.c
@@ -8,6 +8,7 @@
 #include <stdarg.h>
 #include <pty.h>
 #include <libubox/uloop.h>
+#include <cutils/properties.h>
 #include <time.h>
 #include <sys/time.h>
 
@@ -15,6 +16,7 @@
 #include "mbtk_log.h"
 #include "gnss_log.h"
 #include "mbtk_gnss.h"
+#include "mbtk_utils.h"
 
 #define DATABITS    CS8
 #define STOPBITS    0
@@ -477,7 +479,7 @@
 
     time_t _t = mktime(&tmp_time);//parse location tmp_time
 
-    
+
 
     return _t;
 }
@@ -550,7 +552,7 @@
 
                   struct timeval tv;
                   tv.tv_sec = _t;
-                  tv.tv_sec += 28800;  //cst 
+                  tv.tv_sec += 28800;  //cst
                   tv.tv_usec = 0;
 
 #endif
@@ -559,7 +561,7 @@
                         mbtk_gnss_time_set_flag = 0;
                     } else {
                         LOGD("%s: 1111, Set time success \n", __func__);
-                        system("hwclock -w rtc0");
+                        mbtk_system("hwclock -w rtc0");
                         mbtk_gnss_time_set_flag = 1;
                     }
                 }