ASoC: qcom: sc7180: Add support for audio over DP

Add support for audio playback over DP in lpass
sc7180 platform driver. Update lpass_variant
structure for hdmi data configuaration.

Signed-off-by: V Sujith Kumar Reddy <vsujithk@codeaurora.org>
Signed-off-by: Srinivasa Rao <srivasam@codeaurora.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/1602134223-2562-8-git-send-email-srivasam@codeaurora.org
Signed-off-by: Mark Brown <broonie@kernel.org>