Add missing includes.

Change-Id: I1dad32ab459c25063a70cf52100a29d00fea3a90
diff --git a/cmds/servicemanager/binder.c b/cmds/servicemanager/binder.c
index db7632d..d1ab05f 100644
--- a/cmds/servicemanager/binder.c
+++ b/cmds/servicemanager/binder.c
@@ -4,6 +4,7 @@
 #include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>