regulator: max77857: Switch back to use struct i2c_driver's .probe()

After commit b8a1a4cd5a ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
commit 03c835f498 ("i2c: Switch .probe() to not take an id parameter")
convert back to (the new) .probe() to be able to eventually drop
.probe_new() from struct i2c_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230718201453.3953602-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max77857-regulator.c

@@ -449,7 +449,7 @@ struct i2c_driver max77857_driver = {
 		.of_match_table = max77857_of_id,
 	},
 	.id_table = max77857_id,
-	.probe_new = max77857_probe,
+	.probe = max77857_probe,
 };
 module_i2c_driver(max77857_driver);