Add ibuild rules for Marcus's AC97 driver to the openbeos build, ithat
will allow it to be built for OpenBeOS. At present they don't work
due to missing headers, but aftre a succesful build this can be
uncommented and it will build and OpenBeOS will try to laod it.
This will provide a nice test case
as Marcus has provided the source! Thanks.
Added the null, zero & digit drivers here and they will be removed from
kernel/drivers
NB this has shown that drivers are not being handled correctly by
devfs. I would have tried to look at it but as it falls under the remit
of vfs I won't touch it.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@147 a95241bf-73f2-0310-859d-f6bbb57e9c96
