CRAS: audio_thread - don't check draining streams

If a stream is draining, don't check if it has replied with more data.

Change-Id: Ia085eb5985ecd802c56b5e1a0f55c3c4a651802f
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - remove unified timestamp.

Unified streams no longer exist, remove setting a timestamp for them.

Change-Id: Ibc1d8694f0eab27cd1850220626678164cde4a6b
Signed-off-by: Dylan Reid <dgreid@chromium.org>
sqme: with streams per dev

Change-Id: Ia8410d5b05ed341016c5b4b900c6ed22e4cd24ac
CRAS: audio_thread - Use helper to check capture frames.

Add a new helper to dev_stream that returns how many frames are
writable in the stream for capture samples.  This will be useful in
later commits as sample rate conversion can make determining this
non-trivial.

Change-Id: I060a349021e0fcde269133dd7c5e51569cafbd62
Signed-off-by: Dylan Reid <dgreid@chromium.org>
wip: src on server for input

Change-Id: Id7231f1eacdd649776f84020dae8659e8b4fef60