[coreboot] [PATCH] add basic support for mainboard iBASE:MB899

[Bernhard Wiedemann]

This patch adds basic support for mainboard iBASE:MB899

based on Kontron 986LCD-M
changed superIO chip to w83627ehg, dropping MIDI
dropped second superIO at 4e
changed superIO-addr from 2e to 4e
adjusted irq_tables.c and devicetree.cb

With this version I was able to boot FILO which could load kernel+initrd
from IDE.
Linux boot did not get far, though.

Signed-off-by: Bernhard M. Wiedemann