alsa_sound: Calculate proxy port latency

The latency of proxy port should be considered during playback
on these devices. This is needed for audio and video to be in sync
when video clip is played.

CRs-Fixed: 499841
Change-Id: Ifca7b2d20081cd8c4544d65f423243f015e8e253
4 files changed
tree: 77a020a7f1c2ce263ac633fb78fd4d9b0e4445cf
  1. alsa_sound/
  2. audiod/
  3. libalsa-intf/
  4. mm-audio/