ASoC: dt-bindings: rtq9128: Add TDM input source slect property

Create a boolean property to select TDM input source coms from 'DATA2'.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1695872468-24433-2-git-send-email-cy_huang@richtek.com


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