i8257 DMA controller exists on one ISA bus, so let's specify it at initialization.
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-3-git-send-email-hpoussin@reactos.org
Signed-off-by: NJohn Snow <jsnow@redhat.com>