Merge "Revert "reorg file structure to match it on GitHub"" am: b1b29e95a5

Original change: https://android-review.googlesource.com/c/platform/external/tinyalsa/+/1519787

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ia556f6e2bcefd432a7d5b27e677044812cfe5de4