skylake: Move ACPI init to SOC instead of mainboard

Move some remaining ACPI init code to the SOC instead of being
done in each mainboard:

- acpi_create_gnvs is now a local function
- add a weak acpi_mainboard_gnvs() that can be used for mainboards
to override or set additional NVS
- add acpi_fill_madt() function for skylake
- remove acpi_create_serialio_ssdt() function as it is unused

BUG=chrome-os-partner:40635
BRANCH=none
TEST=emerge-glados coreboot

Change-Id: I52225e8d38ed846c29d44872e3f4d6ebaf4a7e52
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: c717bb418a0cb6002582572632e42b44b473f718
Original-Change-Id: I0910ac8ef25de265ae1fde16b68f6cbacedb4462
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/297800
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11581
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

0 files changed, 0 insertions, 0 deletions