[RFC PATCH 02/11] iio: industrialio-core - Bring includes up to date.

[Jonathan Cameron <jic23@kernel.org>]

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Using the include-what-you-use tool as a guide
a) Drop unnused headers.
b) Add missing headers for functionality directly used in this file.

Note that this is not an automated process and in somecases the
suggestions were ignored, or a different header included to reflect
what I understand to be expected structure of includes.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/industrialio-core.c | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index d6c2875a832e..64f4aba20d9e 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -8,22 +8,35 @@
 
 #define pr_fmt(fmt) "iio-core: " fmt
 
-#include <linux/anon_inodes.h>
-#include <linux/device.h>
+#include <linux/align.h>
+#include <linux/bitops.h>
 #include <linux/cdev.h>
 #include <linux/debugfs.h>
+#include <linux/device.h>
 #include <linux/err.h>
+#include <linux/export.h>
 #include <linux/fs.h>
+#include <linux/hrtimer.h>
 #include <linux/idr.h>
+#include <linux/init.h>
 #include <linux/kdev_t.h>
 #include <linux/kernel.h>
+#include <linux/kstrtox.h>
+#include <linux/ktime.h>
+#include <linux/list.h>
+#include <linux/math.h>
+#include <linux/math64.h>
+#include <linux/minmax.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
-#include <linux/poll.h>
+#include <linux/printk.h>
 #include <linux/property.h>
-#include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/wait.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/sysfs.h>
+#include <linux/time64.h>
+#include <linux/uaccess.h>
 
 #include <linux/iio/iio.h>
 #include "iio_core.h"
@@ -31,8 +44,8 @@
 #include "iio_opaque.h"
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/buffer_impl.h>
+
+struct iio_buffer;
 
 /* IDA to assign each registered device a unique id */
 static DEFINE_IDA(iio_ida);
-- 
2.33.0