compile code for CONFIG_SOUTHBRIDGE_VIA_K8T800_OLD

compile code for CONFIG_SOUTHBRIDGE_VIA_K8T800_OLD

make code dependent on CONFIG_SOUTHBRIDGE_VIA_K8T800 also be included
for CONFIG_SOUTHBRIDGE_VIA_K8T800_OLD

Change-Id: I9f4624d08de2790fb513a88ed6207e28e7fbc733
Signed-off-by: Florian Zumbiehl <florz@florz.de>
Reviewed-on: http://review.coreboot.org/374
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>