sb/intel/i82801ix: Use the common ACPI pirq generator

For this to work the northbridge and lpc bridge device need acpi_name
functions.

TESTED on Thinkpad X200, a valid PIRQ routing in SSDT in
/sys/firmware/acpi/tables/SSDT

Change-Id: I62e520f53fa3f928a8e6f3b3cf33af2acdd53ed9
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/22980
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
7 files changed