[S] Change in coreboot[main]: mb/google/nissa/var/rull: add touchpad init config of Synaptics&PIXART

[Rui Zhou (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Jayvik Desai, Kapil Porwal, Kyle Lin, Nick Vaccaro, Subrata Banik.

Rui Zhou has posted comments on this change by Rui Zhou. ( https://review.coreboot.org/c/coreboot/+/84999?usp=email )

Change subject: mb/google/nissa/var/rull: add touchpad init config of Synaptics&PIXART
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Patch Set 6:

(1 comment)

File src/mainboard/google/brya/variants/rull/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/84999/comment/d277c221_45ddb9f5?usp... :
PS4, Line 253: 			end
> > i found multiple touchpads submitted by coreboot, and it seems that none of them use FW_config to  […]

@[e-mail] Hi kyle, Do you have any suggestions? For the current FW_config, due to the particularity of config.star, we have already used a lot of bits. If we add touchpad, it will be difficult to maintain. Can we use ssfc to distinguish?