IOAPIC: fix bitmask

APIC ID is bits 27..24, not 19..16.

Change-Id: Ib53a480bf4328901094ca2c4713e8317321962a1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/299
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
1 file changed