iio: amplifiers: ad8366: refactor include headers

Apply IWYU principle, removing the following headers:
- linux/device.h: no usage of devm_add_action_or_reset, device_attr...
- linux/kernel.h: no usage of container_of, kasprintf, ...
- linux/slab.h: memory management handled by iio
- linux/sysfs.h: sysfs interaction is managed by iio
- linux/iio/sysfs.h: not using iio device attributes in this driver
Adding the following missing headers:
+ linux/array_size.h: for ARRAY_SIZE
+ linux/bits.h: for BIT
+ linux/dev_printk.h: for dev_err
+ linux/math.h: for abs
+ linux/mutex.h: for mutex_lock, mutex_unlock
+ linux/mod_devicetable.h: for spi_device_id
+ linux/types.h for NULL, __aligned

Additionally, those include directives are alphabetically sorted.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/amplifiers/ad8366.c

@@ -11,19 +11,22 @@
  * Copyright 2012-2019 Analog Devices Inc.
  */
 
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/spi/spi.h>
-#include <linux/regulator/consumer.h>
-#include <linux/gpio/consumer.h>
-#include <linux/err.h>
-#include <linux/module.h>
+#include <linux/array_size.h>
 #include <linux/bitrev.h>
+#include <linux/bits.h>
+#include <linux/dev_printk.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/math.h>
+#include <linux/minmax.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/types.h>
 
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 
 enum ad8366_type {
 	ID_AD8366,