linuxpci: add support for modified fsroot
linuxpci: add support for modified fsroot

This only brings PCI devices, no OS device yet.

This commit was SVN r5674.

shekkbuilder/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc