Log Message:
hal: try to help ubuntu 14.04 builds.

we rely on libpci to come from pciutils, but it installs to a different
include path than this package expects (it looks for pci/pci.h)

XXX we might want to change this! the reason we namespace is that netbsd
has its own libpci, and to avoid unexpected conflicts.

but the upstream default isn't pci/pci.h, either!