staging: iio: ad5933: organize includes

Organize includes to list them in lexicographic order.
Signed-off-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/impedance-analyzer/ad5933.c

@@ -6,22 +6,22 @@
  * Licensed under the GPL-2.
  */
 
-#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/sysfs.h>
+#include <linux/err.h>
 #include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/regulator/consumer.h>
+#include <linux/sysfs.h>
 #include <linux/types.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/clk.h>
 
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
 #include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
 
 /* AD5933/AD5934 Registers */
 #define AD5933_REG_CONTROL_HB		0x80	/* R/W, 1 byte */