regulator: mp5416: use OF match data

In preparation for adding support for MP5496 which slightly differs from
MP5416 convert the driver to use OF match data instead of always using the
MP5416 regulator_desc for regulator registration.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Acked-by: Saravanan Sekar <sravanhome@gmail.com>
Link: https://lore.kernel.org/r/20220604145816.47576-3-robimarko@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/mp5416.c

@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
@@ -178,6 +179,7 @@ static int mp5416_i2c_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	struct regulator_config config = { NULL, };
+	static const struct regulator_desc *desc;
 	struct regulator_dev *rdev;
 	struct regmap *regmap;
 	int i;
@@ -188,12 +190,16 @@ static int mp5416_i2c_probe(struct i2c_client *client)
 		return PTR_ERR(regmap);
 	}
 
+	desc = of_device_get_match_data(dev);
+	if (!desc)
+		return -ENODEV;
+
 	config.dev = dev;
 	config.regmap = regmap;
 
 	for (i = 0; i < MP5416_MAX_REGULATORS; i++) {
 		rdev = devm_regulator_register(dev,
-					       &mp5416_regulators_desc[i],
+					       &desc[i],
 					       &config);
 		if (IS_ERR(rdev)) {
 			dev_err(dev, "Failed to register regulator!\n");
@@ -205,7 +211,7 @@ static int mp5416_i2c_probe(struct i2c_client *client)
 }
 
 static const struct of_device_id mp5416_of_match[] = {
-	{ .compatible = "mps,mp5416" },
+	{ .compatible = "mps,mp5416", .data = &mp5416_regulators_desc },
 	{},
 };
 MODULE_DEVICE_TABLE(of, mp5416_of_match);