ODROID-C5: fix Weston z-order problem

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
diff --git a/libweston/compositor.c b/libweston/compositor.c
index 6829c91..5c8e0ee 100644
--- a/libweston/compositor.c
+++ b/libweston/compositor.c
@@ -2858,7 +2858,8 @@
 		wl_list_for_each(view, &layer->view_list.link, layer_link.link)
 			surface_stash_subsurface_views(view->surface);
 
-	weston_compositor_build_view_list_by_zorder(compositor);
+	if (!compositor->disable_simpleshell)
+		weston_compositor_build_view_list_by_zorder(compositor);
 	wl_list_for_each_safe(view, tmp, &compositor->view_list, link)
 		wl_list_init(&view->link);
 	wl_list_init(&compositor->view_list);