treewide: Fix Marek's name and change my e-mail address

Fix diacritics in some instances of my name and change my e-mail address
to kabel@kernel.org.

Add corresponding .mailmap entries.

Signed-off-by: Marek BehĂșn <kabel@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/mach-mvebu/armada3700/cpu.c b/arch/arm/mach-mvebu/armada3700/cpu.c
index 52b5109..ab72b30 100644
--- a/arch/arm/mach-mvebu/armada3700/cpu.c
+++ b/arch/arm/mach-mvebu/armada3700/cpu.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2016 Stefan Roese <sr@denx.de>
- * Copyright (C) 2020 Marek Behun <marek.behun@nic.cz>
+ * Copyright (C) 2020 Marek Behún <kabel@kernel.org>
  */
 
 #include <common.h>
diff --git a/arch/arm/mach-mvebu/armada3700/mbox.c b/arch/arm/mach-mvebu/armada3700/mbox.c
index eb1f828..6555b86 100644
--- a/arch/arm/mach-mvebu/armada3700/mbox.c
+++ b/arch/arm/mach-mvebu/armada3700/mbox.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2018 Marek Behun <marek.behun@nic.cz>
+ * Copyright (C) 2018 Marek Behún <kabel@kernel.org>
  * Copyright (C) 2021 Pali Rohár <pali@kernel.org>
  */