test/ivi: include protocol headers for all used protocols

This seems like a good idea for consistency that the protocol header
is included for any protocols used by the code. This also means the
code will compile with headers generated by wayland-scanner -c.

Fixed to use angle brackets.

Reviewed-by: Daniel Stone <daniels@collabora.com>
diff --git a/tests/weston-test-client-helper.h b/tests/weston-test-client-helper.h
index 1c8180d..7c2727a 100644
--- a/tests/weston-test-client-helper.h
+++ b/tests/weston-test-client-helper.h
@@ -31,6 +31,7 @@
 #include <assert.h>
 #include <stdbool.h>
 
+#include <wayland-client-protocol.h>
 #include "weston-test-runner.h"
 #include "weston-test-client-protocol.h"