regulator: rpi-panel-attiny-regulator: Remove redundant of_match_ptr()

The driver depends on CONFIG_OF, so it is not necessary to use
of_match_ptr() here, and __maybe_unused can also be removed.

Even for drivers that do not depend on CONFIG_OF, it's almost always
better to leave out the of_match_ptr(), since the only thing it can
possibly do is to save a few bytes of .text if a driver can be used both
with and without it.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230807134127.2380390-1-ruanjinjie@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/rpi-panel-attiny-regulator.c

@@ -397,7 +397,7 @@ static struct i2c_driver attiny_regulator_driver = {
 	.driver = {
 		.name = "rpi_touchscreen_attiny",
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-		.of_match_table = of_match_ptr(attiny_dt_ids),
+		.of_match_table = attiny_dt_ids,
 	},
 	.probe = attiny_i2c_probe,
 	.remove	= attiny_i2c_remove,