[INTEL] Remove support for INFO_PAUSE

[plbossart]

Tracking this topic as an 'enhancement'

#1336 introduces platform-specific INFO flags
The next logical steps is to revisit support for INFO_PAUSE.

Facts:

1. PulseAudio and CRAS do not use PAUSE_PUSH/PAUSE_RELEASE
2. The implicit assumption is that on PAUSE_RELEASE playback should restart from the exact position reached when PAUSE_PUSH was signaled. None of the Intel platforms can guarantee such a level of accuracy.
3. In addition, ALSA generates nasty warnings when doing a PAUSE_RELEASE after a suspend-release transition (when INFO_RESUME is not supported as well)

So is it time to remove INFO_PAUSE? Does anyone have an objection or counter-argument?

[plbossart]

I am told Windows does require support for pause. If we truly want to support this, we should probably have a context save/restore as done for closed-source firmware. Just doing a stop/start is probably not so good.
@lbetlej @mmaka1 if we really want to support pause there are probably more hooks to be added for firmware?

[plbossart]

no plans to remove PAUSE.