ASOC: adau7118: Change regulators id

Change the regulators id in accordance with b670e44fc3bd.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20191021140816.262401-3-nuno.sa@analog.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/adau7118.c

@@ -463,14 +463,14 @@ static void adau7118_regulator_disable(void *data)
 
 static int adau7118_regulator_setup(struct adau7118_data *st)
 {
-	st->iovdd = devm_regulator_get(st->dev, "IOVDD");
+	st->iovdd = devm_regulator_get(st->dev, "iovdd");
 	if (IS_ERR(st->iovdd)) {
 		dev_err(st->dev, "Could not get iovdd: %ld\n",
 			PTR_ERR(st->iovdd));
 		return PTR_ERR(st->iovdd);
 	}
 
-	st->dvdd = devm_regulator_get(st->dev, "DVDD");
+	st->dvdd = devm_regulator_get(st->dev, "dvdd");
 	if (IS_ERR(st->dvdd)) {
 		dev_err(st->dev, "Could not get dvdd: %ld\n",
 			PTR_ERR(st->dvdd));