Explicitly add header files used by regmap SoundWire support.

Suggested-by: Guennadi Liakhovetski <[email protected]>
Reviewed-by: Rander Wang <[email protected]>
Reviewed-by: Guennadi Liakhovetski <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
---
 drivers/base/regmap/regmap-sdw.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/base/regmap/regmap-sdw.c b/drivers/base/regmap/regmap-sdw.c
index c92d614b4943..c83be26434e7 100644
--- a/drivers/base/regmap/regmap-sdw.c
+++ b/drivers/base/regmap/regmap-sdw.c
@@ -2,7 +2,9 @@
 // Copyright(c) 2015-17 Intel Corporation.
 
 #include <linux/device.h>
+#include <linux/errno.h>
 #include <linux/module.h>
+#include <linux/regmap.h>
 #include <linux/soundwire/sdw.h>
 #include "internal.h"
 
-- 
2.25.1

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