asoc: add code change for pseudo playback and capture BE DAIs.

Pseudo AFE port based BE DAIs can be used for various use cases, including
but not limited to voice call. Add support for BE DAI link based on pseudo
port and add machine driver changes for proxy port changes.

Change-Id: I755a5fbffb6739fab433984a0a43c61590828a31
Signed-off-by: Anver sadhique <akurun@codeaurora.org>
8 files changed