This is really part of the earlier changeset from David to add the
new machine vector to support certain limited range DMA cards on
zx1.  I just forgot to run "bk new" before the commit, so the newly
added files weren't checked into BK.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>