add example on how to specify PCI devices
add phy drivers
add wm(4) PCI NIC driver
add pcn(4) PCI NIC driver
g/c unnecessary bits
include hypercall header from right place
consistent naming
add PCI bus support
Add rest of PCI driver hierarchy
Build PCI drivers
build PCI drivers as part of buildxen.sh
Pull new submodules (for PCI support)
if we're LP64, pretend we can do dma64
pull buildrump.sh for amd64 fix
spell dmat64 correctly (usually helps code compile)
use MAKEOBJDIRPREFIX to fix obj locations for now
and create the objdir root too ...
header visibility
update comments -- things _are_ expected to compile
add note describing why dma mem alloc needs more work