This typo keeps us from properly routing an interrupt for CardBus
bridges on this machine. So, now we look for $PIR and then _PIR to
cope. With these changes, the Libretto L1 now works properly.
Evidentally, the idea comes from patch that the Japanese version of
RedHat (or against a Japanese version of Red Hat), but my Japanese
isn't good enough to to know for sure.
Reported by: Hiroyuki Aizu-san <eyes@navi.org>
# This may be an MFC candidate, but I'm not yet sure.