[S] Change in coreboot[main]: mb/google/fatcat: Enable HDA SDI based on FW config

[Subrata Banik (Code Review)]

Attention is currently required from: Jayvik Desai, Kapil Porwal, Pranava Y N.

Hello Jayvik Desai, Kapil Porwal, Pranava Y N, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/87090?usp=email

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

Change subject: mb/google/fatcat: Enable HDA SDI based on FW config
......................................................................

mb/google/fatcat: Enable HDA SDI based on FW config

This commit modifies the handling of PCH High Definition Audio (HDA)
Serial Digital Interface (SDI) enablement.

- In `devicetree.cb`, the static `pch_hda_sdi_enable` property is
  removed to allow varaints to override if needed.
- In `variant.c`, `variant_update_soc_memory_init_params` is
  introduced to dynamically configure `PchHdaSdiEnable` UPD based on
  the firmware configuration (for example: `AUDIO_ALC256_HDA` or
  `AUDIO_ALC256M_CG_HDA`).
  SDI is enabled if this FW config option is present. Otherwise, it
  defaults to disabled.
- `variant.c` is now added for romstage as well because the SDI
  configuration needs to happen earlier in the boot process.

BUG=b:328770565, b:407876136
TEST=Able to reduce the boot time by 18ms for SKUs w/o HDA audio.

Change-Id: Ice28ea7445a5cb32fe8263ada363d4f45c3152f5
Signed-off-by: Subrata Banik 
---
M src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb
M src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
M src/mainboard/google/fatcat/variants/fatcat/variant.c
M src/mainboard/google/fatcat/variants/francka/Makefile.mk
A src/mainboard/google/fatcat/variants/francka/variant.c
5 files changed, 32 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/87090/4