tests: Include "config.h" as first header

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
diff --git a/tests/weston-test-client-helper.c b/tests/weston-test-client-helper.c
index 79097fa..eadc29b 100644
--- a/tests/weston-test-client-helper.c
+++ b/tests/weston-test-client-helper.c
@@ -20,7 +20,7 @@
  * OF THIS SOFTWARE.
  */
 
-#include <config.h>
+#include "config.h"
 
 #include <stdlib.h>
 #include <stdio.h>