Drop linux/iio/sysfs.h since it is unused and replace linux/kernel.h
with more explicit headers. There are a couple of other headers added
weren't covered by kernel.h, like linux/gpio/consumer.h that are added
since the module makes use of those APIs as well.

Signed-off-by: David Lechner <dlechner@baylibre.com>
---
 drivers/iio/adc/ad_sigma_delta.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index f91f7ae6dfca05cf3ae632a5f19990f3d153b706..b5c66a6cc47ec8e36c458fae87309fd30109c0ec 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -7,21 +7,28 @@
  */
 
 #include <linux/align.h>
+#include <linux/bitmap.h>
 #include <linux/bitops.h>
+#include <linux/cleanup.h>
+#include <linux/completion.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/export.h>
+#include <linux/find.h>
+#include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
-#include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/spi/spi.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
 #include <linux/types.h>
 #include <linux/unaligned.h>
 
 #include <linux/iio/adc/ad_sigma_delta.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/trigger.h>
 #include <linux/iio/triggered_buffer.h>

-- 
2.43.0