[automerger skipped] tinyalsa: add support for tinyalsa pcm plugins am: eb387d7d1c am: faba7ee47a am: 8d4a524ef4 -s ours

am skip reason: Change-Id I47c8fea4fe20864c7bba2b13377874be96cb2706 with SHA-1 bb40f175e6 is in history

Original change: https://android-review.googlesource.com/c/platform/external/tinyalsa/+/1554365

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I4072f573a4e79f874e2046d3835cf9ea5d4f675f