ASoC: msm: Add switch for primary mi2s hostless playback

Add switch widget to route hostless playback to primary mi2s
backend to support voip loopback test or FM.

Change-Id: I8829742674783e9465bdd97d5f94bbae826e0038
Signed-off-by: Helen Zeng <xiaoyunz@codeaurora.org>
1 file changed