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/drivers/watchdog/armada-37xx-wdt.c b/drivers/watchdog/armada-37xx-wdt.c
index bacebbc..e09f5ac 100644
--- a/drivers/watchdog/armada-37xx-wdt.c
+++ b/drivers/watchdog/armada-37xx-wdt.c
@@ -2,7 +2,7 @@
 /*
  * Marvell Armada 37xx SoC Watchdog Driver
  *
- * Marek Behun <marek.behun@nic.cz>
+ * Marek Behún <kabel@kernel.org>
  */
 
 #include <common.h>