[PATCH 5/6] staging:iio:ad2s90: Add SPDX license identifier

[Matheus Tavares]

This patch adds the SPDX GPL-2.0-only license identifier to ad2s90.c,
which solves the checkpatch.pl warning:
"WARNING: Missing or malformed SPDX-License-Identifier tag in line 1".

Signed-off-by: Matheus Tavares <matheus.bernardino@xxxxxx>
---
 drivers/staging/iio/resolver/ad2s90.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c
index 949ff55ac6b0..f439da721df8 100644
--- a/drivers/staging/iio/resolver/ad2s90.c
+++ b/drivers/staging/iio/resolver/ad2s90.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ad2s90.c simple support for the ADI Resolver to Digital Converters: AD2S90
  *
-- 
2.18.0