MFC (revision 1.5):
MFC (revision 1.5):

- Fix severe crackling after long running and abusive module load / unload
  by forcing DMA alignment to default buffer size.
- Make sure DMA pointer properly aligned to avoid being truncated by caller
  which causing severe underruns and random popping (especially in 32bit
  playback / recording).
- Add AC97 inverted external amplifier quirk for Maxselect x710s
  - http://maxselect.ru/
- Trim unnecessary pointer alignment.

Approved by:	re (scottl)

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