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/MAINTAINERS b/board/gdsys/mpc8308/MAINTAINERS
index 21470bf..755b9a2 100644
--- a/board/gdsys/mpc8308/MAINTAINERS
+++ b/board/gdsys/mpc8308/MAINTAINERS
@@ -1,5 +1,5 @@
 MPC8308 BOARD
-M:	Dirk Eibach <eibach@gdsys.de>
+M:	Dirk Eibach <dirk.eibach@gdsys.cc>
 S:	Maintained
 F:	board/gdsys/mpc8308/
 F:	include/configs/hrcon.h
diff --git a/board/gdsys/mpc8308/Makefile b/board/gdsys/mpc8308/Makefile
index 42702fb..f9671cf 100644
--- a/board/gdsys/mpc8308/Makefile
+++ b/board/gdsys/mpc8308/Makefile
@@ -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+
 #
diff --git a/board/gdsys/mpc8308/hrcon.c b/board/gdsys/mpc8308/hrcon.c
index 96f60be..ed5cb33 100644
--- a/board/gdsys/mpc8308/hrcon.c
+++ b/board/gdsys/mpc8308/hrcon.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+
  */
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+
  */
diff --git a/board/gdsys/mpc8308/strider.c b/board/gdsys/mpc8308/strider.c
index 8821105..c8ea8a4 100644
--- a/board/gdsys/mpc8308/strider.c
+++ b/board/gdsys/mpc8308/strider.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+
  */