Patch merged into coreboot/master: arch/x86/acpigen: Provide helper functions for enabling/disabling GPIO

the following patch was just integrated into master:
commit bf4845dd3acf3ce9e9c63ce8c35ee7111351aa78
Author: Furquan Shaikh 
Date:   Mon Feb 20 22:56:25 2017 -0800

arch/x86/acpigen: Provide helper functions for enabling/disabling GPIO

In order to allow GPIOs to be set/clear according to their polarity,
    provide helper functions that check for polarity and call set/clear
    SoC functions for generating ACPI code.

BUG=None
    BRANCH=None
    TEST=Verified that the ACPI code generated remains the same as before
    for reef.

Change-Id: Ie8bdb9dc18e61a4a658f1447d6f1db0b166d9c12
    Signed-off-by: Furquan Shaikh 
    Reviewed-on: https://review.coreboot.org/18427
    Reviewed-by: Aaron Durbin 
    Tested-by: build bot (Jenkins)

See https://review.coreboot.org/18427 for details.

-gerrit