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/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 3b18d7d..d36d584 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -115,7 +115,7 @@
 	u_int32_t flags;
 	uint64_t size;	 /* Total size of the MTD */
 
-	/* "Major" erase size for the device. Naïve users may take this
+	/* "Major" erase size for the device. Naïve users may take this
 	 * to be the only erase size available, or may use the more detailed
 	 * information below if they desire
 	 */