mptable: Don't describe pci-to-pci bridges.

It should not be necessary to describe PCI-to-PCI bridges in the
mptable.  (The mptable was designed to fit in ROM, so it seems
unlikely that it would be used for bridges that could be dynamically
added.)  Describing only the root bus should make it easier to port
this content into QEMU.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
1 file changed