Change in coreboot[master]: mb/google/dedede: Create bugzzy variant

[Raymond Chung (Code Review)]

Attention is currently required from: Henry Sun, SH Kim, Edward Doan, Karthik Ramasubramanian.
Raymond Chung has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56762 )

Change subject: mb/google/dedede: Create bugzzy variant
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Patch Set 1:

(1 comment)

File src/mainboard/google/dedede/variants/bugzzy/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/56762/comment/3d0177b7_a4baadc6 
PS1, Line 44: 				.scl_lcnt = 176,
            : 				.scl_hcnt = 95,
            : 				.sda_hold = 36,
> Recommendation is to configure the rise_time_ns/fall_time_ns instead of lcnt/hcnt. […]

This CL is used to create new variants. It will be configured after measurement in hardware.