puzzles: fix copyright year

Change-Id: Iaa02e7a1fe4c17be7c4decbd5eb71206469710e9
diff --git a/apps/plugins/sgt-puzzles.c b/apps/plugins/sgt-puzzles.c
index 082e5b4..cdcd72e 100644
--- a/apps/plugins/sgt-puzzles.c
+++ b/apps/plugins/sgt-puzzles.c
@@ -7,7 +7,7 @@
  *                     \/            \/     \/    \/            \/
  * $Id$
  *
- * Copyright (C) 2009 Franklin Wei
+ * Copyright (C) 2017 Franklin Wei
  *
  * Overlay loader stub plugin for puzzles
  *