85xx: Add suport for TQM8548 and some TQM85xx fixes

Hello,

it follows version 2 of patches adding support for the TQM8548 modules from TQ Components (http://www.tqc.de) and furthermore fixing some issues with other TQM85xx modules.

They are already based on Kumar's powerpc Linux tree (linux-2.6-galak).

The NAND support requires the patch with the subject
"[PATCH v2] [NAND] driver extension to support NAND on TQM85xx modules" posted to this list a few minutes ago.

Wolfgang.