Change in coreboot[master]: mb/prodrive/hermes: Implement the mainboard option table interface

[Patrick Rudolph (Code Review)]

Attention is currently required from: Martin Roth, Patrick Rudolph, Christian Walter, Angel Pons.
Hello build bot (Jenkins), Patrick Georgi, Martin Roth, Christian Walter, Angel Pons,

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

https://review.coreboot.org/c/coreboot/+/52577

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

Change subject: mb/prodrive/hermes: Implement the mainboard option table interface
......................................................................

mb/prodrive/hermes: Implement the mainboard option table interface

The board allows to configure firmware settings using the BMC's webUI
and stores it in an I2C EEPROM.

Implement mainboard_get_option and mainboard_set_option.

TODO: The bakend caches data and thus different stages might not see
an updated variable at runtime.

Change-Id: I11fc342c5d422cc3d29392df9c53c7996d6f868e
Signed-off-by: Patrick Rudolph 
---
M src/mainboard/prodrive/hermes/Kconfig
M src/mainboard/prodrive/hermes/Makefile.inc
M src/mainboard/prodrive/hermes/eeprom.c
A src/mainboard/prodrive/hermes/option.c
M src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
5 files changed, 117 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/77/52577/2