ASoC: max9867: Add copyright and module author

Driver rewritten, assign copyright notice and change module author
as original one remains silent and I want to be notified about bugs.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/max9867.c

-/*
- * max9867.c -- max9867 ALSA SoC Audio driver
- *
- * Copyright 2013-15 Maxim Integrated Products
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// MAX9867 ALSA SoC codec driver
+//
+// Copyright 2013-2015 Maxim Integrated Products
+// Copyright 2018 Ladislav Michl <ladis@linux-mips.org>
+//
 
 #include <linux/delay.h>
 #include <linux/i2c.h>
@@ -551,6 +549,6 @@ static struct i2c_driver max9867_i2c_driver = {
 
 module_i2c_driver(max9867_i2c_driver);
 
-MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
-MODULE_DESCRIPTION("ALSA SoC MAX9867 driver");
+MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>");
+MODULE_DESCRIPTION("ASoC MAX9867 driver");
 MODULE_LICENSE("GPL");