Port to recent reference board (AMD Persimmon) changes in commits: c93a75a AMD/CIMx: Add functions for AMD PCI IRQ routing Change-Id: I307709bfee554bc64788a973da6d9313ca7c0de2 Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/5882 Tested-by: build bot (Jenkins) Reviewed-by: Mike Loptien <mike.loptien@se-eng.com>