AHAL: enable true stereo record

    - Add true stereo support for ravelin.
    - Dmic-endfire fluence module mixes the data received from both
      channels. To support true stereo, EANS module has to be used.
    - Add custom config to pick default topology with EANS module

Change-Id: I617d5b0418bc1033edae5dc1e3bb800aabb12ba1
3 files changed