AUD2HTX works as the cpu dai in HDMI audio sound card.
This sound card only support playback/output.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>