ASoC: lpass-cpu: Move to yaml format

Update lpass-cpu binding with yaml formats.

Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Link: https://lore.kernel.org/r/1597402388-14112-13-git-send-email-rohitkr@codeaurora.org


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