Patch merged into coreboot/master: intel/eagleheights: Fix IASL warnings

the following patch was just integrated into master:
commit c4fa3fdd3ea3f8e05cbbc881d45d1fb1927b525d
Author: Martin Roth 
Date:   Mon Nov 23 16:27:53 2015 -0700

intel/eagleheights: Fix IASL warnings

The eagleheights platform had 3 warnings:

The SIO device needs an _ADR object to specify the address in addition
    to the operating region.

Not all the paths through the _OSC method returned a value.  According
    to the ACPI spec (5.0 & 6.0), bit 2 needs to be set for an unrecognized
    GUID.

dsdt.aml    341:   Device(SIO) {
    Warning  3141 -            ^ Missing dependency
    (Device object requires a _HID or _ADR in same scope)
    dsdt.aml  140: Method (_OSC, 4)
    Warning  3115 -          ^ Not all control paths return a value (_OSC)
    dsdt.aml  140: Method (_OSC, 4)
    Warning  3107 -          ^ Reserved method must return a value
    (Buffer required for _OSC)

- Remove Kconfig default disabling IASL warnings as errors.

Change-Id: Iab52f19b96468e142b06430d99ba1d9f367d126e
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/12522
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See https://review.coreboot.org/12522 for details.

-gerrit