ASoC: mediatek: mt8183: support left justified format for I2S

MT8183 audio platform supports EIAJ and I2S formats.  The code fixed to
use I2S format in the past.

Supports EIAJ mode via set_fmt ops and preserves to use I2S format as
the default format intentionally.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200720012559.906088-2-tzungbi@google.com


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