K 10
svn:author
V 5
gonzo
K 8
svn:date
V 27
2016-04-13T05:28:27.104407Z
K 7
svn:log
V 379
Multiple fixes in VCHI audio driver:

- Pre-buffer audio data to VideoCore so there are no audible glitches when
    driver is too late to provide samples
- Start actual playback when there is some prebuffered audio,
    it fixes audible noisy click in the beginning of playback
- Use #defines instead of hardcoded values where appropriate
- Fix copy-pasted comment

PR:		208678

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