include/linux/mtd: Update copyright notices
Condense these updates down to SPDX tags too while doing this. This is
a port of a1452a3771c4eb85bd779790b040efdc36f4274e from the Linux
Kernel.
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index c2cd3df..9da77ec 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -1,7 +1,7 @@
/*
* Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> et al.
*
- * Released under GPL
+ * SPDX-License-Identifier: GPL-2.0+
*
*/