bge(4) busdma-fy

[Sepherosa Ziehau]

Hi all,

Please test/review following patch:
http://leaf.dragonflybsd.org/~sephe/bge_dma3.diff
It does not add new devices support; I hope users that currently have
a working bge(4) can help testing above patch.  I have done some tests
with the patch, so should be safe to be tested :)
If no problems pop up and no objection comes, it will be commit on
this Sunday morning.
Best Regards,
sephe
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