staging: iio: ad2s1200: Sort includes alphabetically

This patches sorts all the includes in alphabetic order.
Signed-off-by: David Veenstra <davidjulianveenstra@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/resolver/ad2s1200.c

@@ -9,15 +9,15 @@
  * published by the Free Software Foundation.
  *
  */
-#include <linux/types.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
-#include <linux/spi/spi.h>
-#include <linux/sysfs.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
+#include <linux/device.h>
 #include <linux/gpio.h>
 #include <linux/module.h>
-#include <linux/bitops.h>
+#include <linux/mutex.h>
+#include <linux/spi/spi.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>