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/kwboot.c b/tools/kwboot.c
index b697d3b..16bcd4d 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -5,7 +5,7 @@
  *
  * (c) 2012 Daniel Stodden <daniel.stodden@gmail.com>
  * (c) 2021 Pali Rohár <pali@kernel.org>
- * (c) 2021 Marek Behún <marek.behun@nic.cz>
+ * (c) 2021 Marek Behún <kabel@kernel.org>
  *
  * References:
  * - "88F6180, 88F6190, 88F6192, and 88F6281: Integrated Controller: Functional