Move all IOAPIC selection to southbridges, and remove them

Move all IOAPIC selection to southbridges, and remove them
from mainboards.
Some adaptations were necessary after the IOAPIC cleanup,
so this should fix the build.

Fix intel/d945gclf build, which was missing some ACPI component.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5039 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1