[S] Change in coreboot[main]: mb/google/fatcat: Optimize CBFS backed option API

[Kapil Porwal (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Jayvik Desai, Julius Werner, Nick Vaccaro, Pranava Y N.

Hello Dinesh Gehlot, Eric Lai, Jayvik Desai, Julius Werner, Nick Vaccaro, Pranava Y N, Subrata Banik, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/87286?usp=email

to look at the new patch set (#6).

Change subject: mb/google/fatcat: Optimize CBFS backed option API
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mb/google/fatcat: Optimize CBFS backed option API

Option file look up in CBFS is slow due to the CBFS traversal. Add a
logic to skip lookup for all the options other than MRC/FSP debug
options.

It uses newly created API `is_valid_option()` to filter out unused
options.

BUG=none
TEST=Verify option filter logic.

Change-Id: I37b33bc8fa14b3760d6d78102e0cf256310d9ac3
Signed-off-by: Kapil Porwal 
---
M src/mainboard/google/fatcat/Makefile.mk
A src/mainboard/google/fatcat/common.c
2 files changed, 26 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/87286/6