[FEATURE] automated test for multiple capture PCM devices #1007

@plbossart bring up an enhancement task.

When we have multiple capture PCM devices coming from the same interface, we should test if the results are identical. We probably want to automate that multi-capture path more. That's an sof-test enhancement we should capture and plan for.

This is good example, sof-adl-nocodec.tplg

cc:

• Multi-playback/capture-pipeline always iterates in the same order #495
• Multi pipeline capture tests are misleading #501