General cleanup/updating of purely sun3/3x code (from Sam Creasey)
  - arch/m68k/sun3(x):
      o Cleaned up prom code slightly
      o Added reporting of prom revision in /proc/hardware
      o Removed some warnings
  - Use common idprom code for both Sun-3 and Sun-3x
  - Sun-3x idprom updates
  - drivers/scsi/sun3*: updated scsi drivers to reflect new struct scatterlist.