treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 315

Based on 1 normalized pattern(s):

license gplv2 as published by the fsf

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <[e-mail]>
Reviewed-by: Armijn Hemel <[e-mail]>
Reviewed-by: Kate Stewart <[e-mail]>
Reviewed-by: Allison Randal <[e-mail]>
Reviewed-by: Alexios Zavras <[e-mail]>
Cc: [e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/input/touchscreen/ar1021_i2c.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Microchip AR1020 and AR1021 driver for I2C
  *
  * Author: Christian Gmeiner <[e-mail]>
- *
- * License: GPLv2 as published by the FSF.
  */
 
 #include <linux/bitops.h>

drivers/input/touchscreen/tsc40.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * TSC-40 serial touchscreen driver. It should be compatible with
  * TSC-10 and 25.
  *
  * Author: Sebastian Andrzej Siewior <[e-mail]>
- * License: GPLv2 as published by the FSF.
  */
 
 #include <linux/kernel.h>