treewide: Fix gdsys mail addresses
The @gdsys.cc addresses are supposed to be used for mailing lists.
Switch all occurrences of @gdsys.de mail addresses to their @gdsys.cc
equivalent.
Also, Dirk's address was wrong in one place; fix that as well.
Signed-off-by: Mario Six <six@gdsys.cc>
diff --git a/board/gdsys/mpc8308/mpc8308.c b/board/gdsys/mpc8308/mpc8308.c
index 86b257f..928f75a 100644
--- a/board/gdsys/mpc8308/mpc8308.c
+++ b/board/gdsys/mpc8308/mpc8308.c
@@ -1,6 +1,6 @@
/*
* (C) Copyright 2014
- * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
+ * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
*
* SPDX-License-Identifier: GPL-2.0+
*/