[L] Change in coreboot[main]: mb/asus/p8x7x-series: Add p8b75-v variant

[Keith Hui (Code Review)]

Attention is currently required from: Felix Held, Keith Hui.

Hello Felix Held, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/85792?usp=email

to look at the new patch set (#3).

The following approvals got outdated and were removed:
Code-Review+2 by Felix Held, Verified+1 by build bot (Jenkins)

The change is no longer submittable: Code-Review and Verified are unsatisfied now.

Change subject: mb/asus/p8x7x-series: Add p8b75-v variant
......................................................................

mb/asus/p8x7x-series: Add p8b75-v variant

Not hardware tested; copied from p8h77-v and p8z77-m then adjusted
USB port config and overridetree based on info seen from vendor
firmware update and boardview. VBT extracted manually from vendor
firmware update.

Currently known facts about this board that aren't already coded
into this patch:

- 3 PCI slots wired to B75 PCI bridge
- DRAM_LED on GP07 of SIO and power LED on GPIO27 of PCH, just like
p8z77-m
- Has TWO 8MiB SPI flash chips on board, both wired to PCH. It appears
to use both to build a 16MiB flash space but that's to be confirmed.

Change-Id: Ibb14c9efd1fb5b8826a646aae5f3fab9d9c08187
Signed-off-by: Keith Hui 
---
A Documentation/mainboard/asus/p8b75-v.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/p8b75-v/board_info.txt
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/cmos.default
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/cmos.layout
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/data.vbt
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/early_init.c
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/gma-mainboard.ads
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/gpio.c
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/hda_verb.c
A src/mainboard/asus/p8x7x-series/variants/p8b75-v/overridetree.cb
13 files changed, 656 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/85792/3