AGESA fam12: Fix MMCONF region

MMIO for non-posted region used hard-coded setting for 64 buses
while MSR programming was for 256 buses.

Change-Id: I690237dd459f7b7b4da68ae55ae9d22b79e5f255
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7812
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
1 file changed