ASoC: codecs: Modify max_register usage error

Modify the value of max_register, otherwirse
the AW88261_EFRL1_REG register will not be
accessible.

Signed-off-by: Weidong Wang <wangweidong.a@awinic.com>
Link: https://lore.kernel.org/r/20231020083426.302925-3-wangweidong.a@awinic.com


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