[coreboot-gerrit] Change in coreboot[master]: mb/prodrive/hermes: Configure ALC888 port B Vref

[Angel Pons (Code Review)]

Attention is currently required from: Justin van Son, Christian Walter, Arthur Heymans.
Angel Pons has uploaded a new patch set (#3) to the change originally created by Arthur Heymans. ( https://review.coreboot.org/c/coreboot/+/58879 )

Change subject: mb/prodrive/hermes: Configure ALC888 port B Vref
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mb/prodrive/hermes: Configure ALC888 port B Vref

Define a new field in the board config EEPROM layout for port B Vref.
Write port B Vref settings to unused non-volatile NID 0x12 instead of
NID 0x18, the actual port B NID. Because per-port Vref settings don't
persist after codec resets, a custom Realtek driver (ab)uses NID 0x12
to restore port B Vref after resetting the codec.

Change-Id: Iaa11ba9c74f643e94046d4983fbce65dbedd1025
Signed-off-by: Arthur Heymans 
Signed-off-by: Angel Pons 
---
M src/mainboard/prodrive/hermes/eeprom.h
M src/mainboard/prodrive/hermes/hda_verb.c
2 files changed, 29 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/79/58879/3