treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 496

Based on 1 normalized pattern(s):

  licensed under gpl v2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.395945938@linutronix.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sound/soc/codecs/ics43432.c

+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * I2S MEMS microphone driver for InvenSense ICS-43432
  *
@@ -5,8 +6,6 @@
  * - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data
  *
  * Copyright (c) 2015 Axis Communications AB
- *
- * Licensed under GPL v2.
  */
 
 #include <linux/module.h>