hwmon: (iio_hwmon) Make use of device properties

Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.

Include mod_devicetable.h explicitly to replace the dropped of.h
which included mod_devicetable.h indirectly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220826173700.17395-1-andriy.shevchenko@linux.intel.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/iio_hwmon.c

@@ -6,11 +6,13 @@
 
 #include <linux/kernel.h>
 #include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
+
 #include <linux/hwmon.h>
-#include <linux/of.h>
 #include <linux/hwmon-sysfs.h>
 #include <linux/iio/consumer.h>
 #include <linux/iio/types.h>
@@ -149,8 +151,8 @@ static int iio_hwmon_probe(struct platform_device *pdev)
 	st->attr_group.attrs = st->attrs;
 	st->groups[0] = &st->attr_group;
 
-	if (dev->of_node) {
-		sname = devm_kasprintf(dev, GFP_KERNEL, "%pOFn", dev->of_node);
+	if (dev_fwnode(dev)) {
+		sname = devm_kasprintf(dev, GFP_KERNEL, "%pfwP", dev_fwnode(dev));
 		if (!sname)
 			return -ENOMEM;
 		strreplace(sname, '-', '_');