iio: proximity: srf04: Make use of device properties

Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220504113557.59048-1-andriy.shevchenko@linux.intel.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/proximity/srf04.c

@@ -37,9 +37,8 @@
 #include <linux/err.h>
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/sched.h>
@@ -261,7 +260,7 @@ static int srf04_probe(struct platform_device *pdev)
 
 	data = iio_priv(indio_dev);
 	data->dev = dev;
-	data->cfg = of_match_device(of_srf04_match, dev)->data;
+	data->cfg = device_get_match_data(dev);
 
 	mutex_init(&data->lock);
 	init_completion(&data->rising);
@@ -289,10 +288,8 @@ static int srf04_probe(struct platform_device *pdev)
 		return PTR_ERR(data->gpiod_power);
 	}
 	if (data->gpiod_power) {
-
-		if (of_property_read_u32(dev->of_node, "startup-time-ms",
-						&data->startup_time_ms))
-			data->startup_time_ms = 100;
+		data->startup_time_ms = 100;
+		device_property_read_u32(dev, "startup-time-ms", &data->startup_time_ms);
 		dev_dbg(dev, "using power gpio: startup-time-ms=%d\n",
 							data->startup_time_ms);
 	}