micropython: update copyright

lang/micropython-lib/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2008-2010 OpenWrt.org
+# Copyright (C) 2008-2015 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.

lang/micropython/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2008-2010 OpenWrt.org
+# Copyright (C) 2008-2015 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.