hwmon: (adt7475) Convert to use device_property APIs

Instead of of_property_read_*() use the equivalent
device_property_read_*() API. This will allow these properties to be
used on DT unaware platforms. For DT aware platforms this will be a
noop.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20230418233656.869055-3-chris.packham@alliedtelesis.co.nzSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/adt7475.c

@@ -1468,7 +1468,7 @@ static int load_config3(const struct i2c_client *client, const char *propname)
 	u8 config3;
 	int ret;
 
-	ret = of_property_read_string(client->dev.of_node, propname, &function);
+	ret = device_property_read_string(&client->dev, propname, &function);
 	if (!ret) {
 		ret = adt7475_read(REG_CONFIG3);
 		if (ret < 0)
@@ -1494,7 +1494,7 @@ static int load_config4(const struct i2c_client *client, const char *propname)
 	u8 config4;
 	int ret;
 
-	ret = of_property_read_string(client->dev.of_node, propname, &function);
+	ret = device_property_read_string(&client->dev, propname, &function);
 	if (!ret) {
 		ret = adt7475_read(REG_CONFIG4);
 		if (ret < 0)
@@ -1556,7 +1556,7 @@ static int set_property_bit(const struct i2c_client *client, char *property,
 			    u8 *config, u8 bit_index)
 {
 	u32 prop_value = 0;
-	int ret = of_property_read_u32(client->dev.of_node, property,
+	int ret = device_property_read_u32(&client->dev, property,
 					   &prop_value);
 
 	if (!ret) {