Convert ISO-8859 files to UTF-8

There was a mix of UTF-8 and ISO-8859 files in the U-Boot source
tree, which could cause issues with the patchwork review system.
This commit converts all ISO-8859 files to UTF-8.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
diff --git a/arch/x86/lib/realmode_switch.S b/arch/x86/lib/realmode_switch.S
index fce4ecc..7ee709a 100644
--- a/arch/x86/lib/realmode_switch.S
+++ b/arch/x86/lib/realmode_switch.S
@@ -1,6 +1,6 @@
 /*
  * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
+ * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
  *
  * See file CREDITS for list of people who contributed to this
  * project.