regulator: mpq7920: Remove redundant of_match_ptr() macro

Since the driver mpq7920 depends on CONFIG_OF,
it makes no difference to wrap of_match_ptr() here.

Remove the of_match_ptr() macro to clean it up.

Signed-off-by: Chen Jiahao <chenjiahao16@huawei.com>
Link: https://lore.kernel.org/r/20230809100428.2669817-6-chenjiahao16@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>