Make config.h inclusion consistent

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
diff --git a/xwayland/hash.c b/xwayland/hash.c
index 54f3de9..820e51f 100644
--- a/xwayland/hash.c
+++ b/xwayland/hash.c
@@ -32,7 +32,7 @@
  *    Keith Packard <keithp@keithp.com>
  */
 
-#include <config.h>
+#include "config.h"
 
 #include <stdlib.h>
 #include <stdint.h>