[L] Change in coreboot[main]: mb/google/fatcat: add pre-mem configuration based on fw_config

[Cliff Huang (Code Review)]

Attention is currently required from: Cliff Huang, Jérémy Compostella.

Hello Jérémy Compostella, Pranava Y N, Subrata Banik, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/84718?usp=email

to look at the new patch set (#5).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: mb/google/fatcat: add pre-mem configuration based on fw_config
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mb/google/fatcat: add pre-mem configuration based on fw_config

Add the GPIO pad configuration to be performed before memory is setup
along with the relevant devices definition.

This patch includes:
- FW config for pre-mem GPIO PAD configuration
- Add overridetree changes used by pre-mem FW config

BUG=b:348678529
TEST=Boot on google fatcat board

Signed-off-by: Cliff Huang 
Change-Id: Iac1f637c21a9818512b224dc4cbe4a75dbc516ce
---
M src/mainboard/google/fatcat/Kconfig
M src/mainboard/google/fatcat/romstage.c
M src/mainboard/google/fatcat/variants/baseboard/include/baseboard/variants.h
M src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
A src/mainboard/google/fatcat/variants/fatcat/fw_config.c
M src/mainboard/google/fatcat/variants/fatcat/overridetree.cb
6 files changed, 405 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/18/84718/5