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/drivers/block/sata_sil3114.h b/drivers/block/sata_sil3114.h
index 8f2301a..f77423a 100644
--- a/drivers/block/sata_sil3114.h
+++ b/drivers/block/sata_sil3114.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) Excito Elektronik i Skåne AB, All rights reserved.
+ * Copyright (C) Excito Elektronik i Skåne AB, All rights reserved.
  * Author: Tor Krill <tor@excito.com>
  *
  * This program is free software; you can redistribute it and/or