[L] Change in coreboot[main]: mb/asus/p8x7x-series: Add SABERTOOTH Z77 as a variant

[Keith Hui (Code Review)]

Attention is currently required from: Keith Hui.

Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/85768?usp=email

to look at the new patch set (#4).

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Verified+1 by build bot (Jenkins)

Change subject: mb/asus/p8x7x-series: Add SABERTOOTH Z77 as a variant
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mb/asus/p8x7x-series: Add SABERTOOTH Z77 as a variant

Based on p8z77-v, with adjusted overridetree, GPIO, GMA, HDA verbs and
USB port config based on boardview and vendor firmware image.

It builds, but not hardware tested.

Unlike most other variants, this one allows use of MRC raminit, if
for testing.

It has no serial port, but the code describes a possible hardware hack
to get one working to receive console output. A debug port allows
access to LPC bus.

Change-Id: I1c26e751a224491c5aa1ce1035c55955ef0ee83c
Signed-off-by: Keith Hui 
---
A Documentation/mainboard/asus/sabertooth_z77.md
M Documentation/mainboard/index.md
M src/mainboard/asus/p8x7x-series/Kconfig
M src/mainboard/asus/p8x7x-series/Kconfig.name
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/board_info.txt
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/cmos.default
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/cmos.layout
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/data.vbt
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/early_init.c
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/gma-mainboard.ads
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/gpio.c
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/hda_verb.c
A src/mainboard/asus/p8x7x-series/variants/sabertooth_z77/overridetree.cb
13 files changed, 708 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/68/85768/4