fix for alix1.c pci bus detection

[Matthew Dillon]

:
:Seen on ALIX.1C board (www.pcengines.ch) .. Matt suspects it may be fix some recent Transmeta -based
:issues ..

    Committed for wider testing.  I'd appreciate it if people running
    HEAD could test this sooner rather then later and report back if
    their systems no longer boot :-)

						-Matt