Add support for Analogue & Micro Rattler boards.
  Tested on Rattler8248.

* Patch by Andre Renaud, 08 Nov 2004:
  Fix watchdog support in common/lcd.c

* Patch by Marc Leeman, 05 Nov 2003:
  Enable all 4 PCMBRW buffers for the MPC8245 processor since the CPU
  bug only affects the XPC8245 processors