iio: dac: ad5504: sort headers alphabetically

Rearrange the include headers in alphabetical order to follow the
standard kernel coding style. This is a preparatory cleanup with
no functional changes.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Taha Ed-Dafili <0rayn.dev@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Author: Taha Ed-Dafili

drivers/iio/dac/ad5504.c

@@ -5,21 +5,21 @@
  * Copyright 2011 Analog Devices Inc.
  */
 
-#include <linux/interrupt.h>
-#include <linux/fs.h>
+#include <linux/bitops.h>
 #include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
 #include <linux/kernel.h>
-#include <linux/spi/spi.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
+#include <linux/spi/spi.h>
 #include <linux/sysfs.h>
-#include <linux/regulator/consumer.h>
-#include <linux/module.h>
-#include <linux/bitops.h>
 
+#include <linux/iio/dac/ad5504.h>
+#include <linux/iio/events.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
-#include <linux/iio/events.h>
-#include <linux/iio/dac/ad5504.h>
 
 #define AD5504_RES_MASK			GENMASK(11, 0)
 #define AD5504_CMD_READ			BIT(15)