init: Move prototypes for util.c into util.h

Change-Id: I46a91849ce5297eb2597dd6134412f817564ec24
diff --git a/init/parser.c b/init/parser.c
index 9ea9274..9424e7e 100644
--- a/init/parser.c
+++ b/init/parser.c
@@ -10,6 +10,7 @@
 #include "init.h"
 #include "property_service.h"
 #include "parser.h"
+#include "util.h"
 
 #include <cutils/iosched_policy.h>