iio: adc: Include cleanup.h when using guard()

Directly include the cleanup.h for the guard() instead of relying it to
be included via other files.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/5b352ce7241e5904a317dd26950c7cd4daa59fc0.1740748394.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/ad4130.c

@@ -6,6 +6,7 @@
 
 #include <linux/bitfield.h>
 #include <linux/bitops.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/delay.h>

drivers/iio/adc/ad7091r-base.c

@@ -7,6 +7,7 @@
 
 #include <linux/bitops.h>
 #include <linux/bitfield.h>
+#include <linux/cleanup.h>
 #include <linux/iio/events.h>
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>

drivers/iio/adc/ad7606.c

@@ -5,6 +5,7 @@
  * Copyright 2011 Analog Devices Inc.
  */
 
+#include <linux/cleanup.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/err.h>

drivers/iio/adc/max34408.c

@@ -8,6 +8,7 @@
  */
 
 #include <linux/bitfield.h>
+#include <linux/cleanup.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/module.h>

drivers/iio/adc/pac1921.c

@@ -7,6 +7,7 @@
 
 #include <linux/unaligned.h>
 #include <linux/bitfield.h>
+#include <linux/cleanup.h>
 #include <linux/i2c.h>
 #include <linux/iio/events.h>
 #include <linux/iio/iio.h>