Patch merged into coreboot/master: lib/gpio: add pullup & pulldown gpio_base2_value() variants

the following patch was just integrated into master:
commit f41ac2298eb61f2a524731a07c915416d562f17c
Author: Aaron Durbin 
Date:   Wed Jul 6 22:37:10 2016 -0500

lib/gpio: add pullup & pulldown gpio_base2_value() variants

Provide common implementations for gpio_base2_value() variants
    which configure the gpio for internal pullups and pulldowns.

BUG=chrome-os-partner:54949
    BRANCH=None
    TEST=Built and used on reef for memory config.

Change-Id: I9be8813328e99d28eb4145501450caab25d51f37
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/15557
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Furquan Shaikh

See https://review.coreboot.org/15557 for details.

-gerrit