Updates license to use SPDX-License-Identifier.

Signed-off-by: Yangtao Li <[email protected]>
---
 drivers/iio/adc/sun4i-gpadc-iio.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c 
b/drivers/iio/adc/sun4i-gpadc-iio.c
index 9b6fc592f54c..cf2bf3ab3342 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /* ADC driver for sunxi platforms' (A10, A13 and A31) GPADC
  *
  * Copyright (c) 2016 Quentin Schulz <[email protected]>
  *
- * 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.
- *
  * The Allwinner SoCs all have an ADC that can also act as a touchscreen
  * controller and a thermal sensor.
  * The thermal sensor works only when the ADC acts as a touchscreen controller
-- 
2.17.1

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