[coreboot] alix1c and v3

[ron minnich]

coreboot seems to by dying in VSM on some config access as well.

Carl-Daniel pointed out to me:
"IIRC there is also a VSM stack which is located in a place differing
from the one clobbered between 0x1000 and 0x2000.

Notice how it blows up exactly at the time where the first virtual PCI
access happens. That means it blows up inside VSM."

So we need to get a complete idea of the needs of VSA/VSM for memory and stack.

ron