ASoC: mediatek: mt8183-da7219: change supported formats of DL2 and UL1

DL2 and UL1 are for BTSCO.  Provides only 16-bit, mono, 8kHz and
16kHz to userspace.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200213112003.1.Ie5aedb9d34ebfc7f05ceb382bfe346c45331cd63@changeid


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