Change in coreboot[master]: mb/prodrive/hermes: Configure pink rear vref based on eeprom

[Angel Pons (Code Review)]

Attention is currently required from: Justin van Son, Christian Walter, Arthur Heymans.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/58879 )

Change subject: mb/prodrive/hermes: Configure pink rear vref based on eeprom
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Patch Set 1:

(1 comment)

File src/mainboard/prodrive/hermes/variants/r04/hda_verb.c:

https://review.coreboot.org/c/coreboot/+/58879/comment/d24749f7_7963bd54 
PS1, Line 89: 		get_port_c_vref_cfg(board_cfg->blue_rear_vref),
> Ack, thanks for confirming

Ah, looking further into the ALC888 datasheet, I understand it now. These two commands use a 4-bit verb ID. They're "Set Coefficient Index" (0x5) and Set Processing Coefficient (0x4). They use NID 0x20, "Realtek Defined Registers".