Add missing includes.

Change-Id: I1dad32ab459c25063a70cf52100a29d00fea3a90

cmds/servicemanager/bctest.c

@@ -3,6 +3,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 
 #include "binder.h"

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>