Change in coreboot[master]: mb/google/fizz: Add variant API for gpio

[David Wu (Code Review)]

Hello build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/28963

to look at the new patch set (#2).

Change subject: mb/google/fizz: Add variant API for gpio
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mb/google/fizz: Add variant API for gpio

Provide API for gpio table functionality. Default weak
implementations are provided from the baseboard.

BUG=b:117066935
BRANCH=Fizz
TEST=emerge-fizz coreboot

Change-Id: Iaafa8d6932bc0a37826175b15816f1b9a4f4c314
Signed-off-by: David Wu 
---
M src/mainboard/google/fizz/bootblock.c
M src/mainboard/google/fizz/ramstage.c
A src/mainboard/google/fizz/variants/baseboard/Makefile.inc
A src/mainboard/google/fizz/variants/baseboard/gpio.c
M src/mainboard/google/fizz/variants/baseboard/include/baseboard/gpio.h
A src/mainboard/google/fizz/variants/baseboard/include/baseboard/variants.h
6 files changed, 316 insertions(+), 248 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/28963/2