Change in coreboot[master]: mb/google/dedede/var/bugzzy: Add stylus probe

[SH Kim (Code Review)]

Attention is currently required from: Henry Sun, Evan Green, Tim Wawrzynczak, Marco Chen, Edward Doan, Karthik Ramasubramanian.
SH Kim has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/61618 )

Change subject: mb/google/dedede/var/bugzzy: Add stylus probe
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Patch Set 2:

(1 comment)

Patchset:

PS1:
> AFAIK, we don't have a proper way to probe mipi display for bugzzy, but not the mipi camera, and Tim […]

Thanks for suggestion about SSFC. We would just add stylus probe only.
As we discussed internally, we don't need to probe camera device for now.
We though probing MIPI camera takes about 2 seconds before (discussed in b:214587421), but the 2 seconds was from ME factory mode. Probing MIPI camera just takes about 100 ms, it seems not critical delay. We can use SSFC for probing mipi camera if we decide to add another camera IC later.
Thanks!