regulator: aw37503: Switch back to use struct i2c_driver's .probe()

struct i2c_driver::probe_new is about to go away. Switch the driver to
use the probe callback with the same prototype.

Signed-off-by: Uwe Kleine-König <[e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]

drivers/regulator/aw37503-regulator.c

···
 		.name = "aw37503",
 		.of_match_table = aw37503_of_match,
 	},
-	.probe_new = aw37503_probe,
+	.probe = aw37503_probe,
 	.id_table = aw37503_id,
 };