ASoC: mediatek: mt6359: convert to use module_platform_driver

Simplify the code by using module_platform_driver macro for
mt6359-accdet.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://lore.kernel.org/r/20210531051203.228567-1-nobuhiro1.iwamatsu@toshiba.co.jp


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