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/tools/termios_linux.h b/tools/termios_linux.h
index e100c8e..45f5c12 100644
--- a/tools/termios_linux.h
+++ b/tools/termios_linux.h
@@ -3,7 +3,7 @@
  * termios fuctions to support arbitrary baudrates (on Linux)
  *
  * Copyright (c) 2021 Pali Rohár <pali@kernel.org>
- * Copyright (c) 2021 Marek Behún <marek.behun@nic.cz>
+ * Copyright (c) 2021 Marek Behún <kabel@kernel.org>
  */
 
 #ifndef _TERMIOS_LINUX_H_