K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2013-10-27T22:05:10.951848Z
K 7
svn:log
V 391
Add a virtual table for the busdma methods on x86, to allow different
busdma implementations to coexist.  Copy busdma_machdep.c to
busdma_bounce.c, which is still a single implementation of the busdma
interface on x86 for now.  The busdma_machdep.c only contains common
and dispatch code.

Tested by:	pho (as part of the larger patch)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 month

END