ASoC: msm: qdsp6v2: Add support to connect LSM to ADM

LSM will connect to ADM to apply preprocessing and improve
detection performance. LSM can also directly connect to AFE
similar to the existing mechanism.
MAD polling will be disabled in case of LSM connects to ADM.
Add EC reference end channel, bit format and sample rate control
to configure far end params for Echo Cancellation.

Change-Id: I4684ae346884d656e95350b7a63929b91a843512
Signed-off-by: Chaithanya Krishna Bacharaju <chaithan@codeaurora.org>
Signed-off-by: Revathi Uddaraju <revathiu@codeaurora.org>