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/include/u-boot/variadic-macro.h b/include/u-boot/variadic-macro.h
index cb815d0..c5fa1b8 100644
--- a/include/u-boot/variadic-macro.h
+++ b/include/u-boot/variadic-macro.h
@@ -2,7 +2,7 @@
 /*
  * Helper for work with variadic macros
  *
- * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
+ * 2017 Marek Behún, CZ.NIC, kabel@kernel.org
  */
 
 #ifndef __VARIADIC_MACRO_H__