K 10
svn:author
V 6
marcel
K 8
svn:date
V 27
2012-05-06T18:23:19.415961Z
K 7
svn:log
V 401
Implement busdma_tag_create(). This uses device_get_busdma_tag() and
device_set_busdma_tag() to obtain newbus inherited constraints and
to link the tag to the device.

Bus inheritance should be a newbus KOBJ method so that devices/busses
can control which of their tags is to be used as a base for inheritance.
For now, this suffices. I don't want to have busdma/mi reach too deep
or extend too wide.

END