pal: config: Update the pal config for ravelin

    - 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.
    - Pick default topology with EANS module for "dual-mic-eans"
      custom config.

Change-Id: I3a3d80fbaa2caa3e823bfa11c5517cfa9c05cd61
3 files changed