Patch merged into coreboot/master: skylake: only generate ACPI cpu entries once

the following patch was just integrated into master:
commit 5a96b3743edb99ced733cf37cbeea305b58768c7
Author: Aaron Durbin 
Date:   Tue Aug 18 10:11:35 2015 -0500

skylake: only generate ACPI cpu entries once

The acpi_fill_ssdt_generator function pointer is evaluated for
    each device. As there are multiple cpus in the system the
    acpi_fill_ssdt_generator was being called more than once creating
    duplicate ACPI entries because there was more than 1 cpu device.
    Fix this by only generating them once by removing the
    acpi_fill_ssdt_generator for the cpu devices, but add the
    generator to the cpu cluster device.

BUG=chrome-os-partner:44084
    BRANCH=None
    TEST=Built and booted on glados. Noted ACPI entries only generated once.

Original-Change-Id: I695c30e6150f6d3a79d13744c532f1b658b10402
    Original-Signed-off-by: Aaron Durbin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/294240
    Original-Reviewed-by: Duncan Laurie 
    Original-Reviewed-by: Leroy P Leahy 
    Original-Commit-Queue: Leroy P Leahy

Change-Id: I7c85f44ba65398bda668e13db8be531535a983c5
    Signed-off-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/11285
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See http://review.coreboot.org/11285 for details.

-gerrit