Fix gnss close timeout.

Change-Id: I567d84056e248643f28388fc00b9967e4f650c81
diff --git a/mbtk/mbtk_gnssd/gnss_6228.h b/mbtk/mbtk_gnssd/gnss_6228.h
index 2ea9dde..20a90b2 100755
--- a/mbtk/mbtk_gnssd/gnss_6228.h
+++ b/mbtk/mbtk_gnssd/gnss_6228.h
@@ -22,7 +22,7 @@
 
 int gnss_6228_dev_open();
 
-int gnss_6228_dev_close();
+int gnss_6228_dev_close(int fd);
 
 int gnss_6228_open(const char *dev);