Change my mailaddress

I'll switch my mails to my own server, so drop all gmail references.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/tools/atmelimage.c b/tools/atmelimage.c
index 6b5603e..9b3600d 100644
--- a/tools/atmelimage.c
+++ b/tools/atmelimage.c
@@ -1,6 +1,6 @@
 /*
  * (C) Copyright 2014
- * Andreas Bießmann <andreas.devel@googlemail.com>
+ * Andreas Bießmann <andreas@biessmann.org>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */