iio: imu: st_lsm6dsx: Switch from of headers to mod_devicetable.h

There is nothing directly using of specific interfaces in this driver,
so lets not include the headers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220507173440.29053-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

@@ -6,11 +6,11 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/i3c/device.h>
 #include <linux/i3c/master.h>
 #include <linux/slab.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 
 #include "st_lsm6dsx.h"