ASoC: SMA1303: Convert the TDM slot properties in devicetree to mixer

It seems correct that the user changes the TDM slot needed after
device probe.

Signed-off-by: Kiseok Jo <kiseok.jo@irondevice.com>
Link: https://lore.kernel.org/r/20230208092420.5037-6-kiseok.jo@irondevice.com


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