[M] Change in coreboot[master]: mb/google/dedede: Support variant specific power limits

[Reka Norman (Code Review)]

Attention is currently required from: ChiaLing, Paul Menzel, Ryan Lin, Subrata Banik, Sumeet R Pawnikar, Zhuohao Lee.

Reka Norman has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/75680?usp=email )

Change subject: mb/google/dedede: Support variant specific power limits
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Patch Set 8:

(1 comment)

File src/mainboard/google/dedede/variants/baseboard/ramstage.c:

https://review.coreboot.org/c/coreboot/+/75680/comment/07b1a0c2_d52a11c8 :
PS8, Line 93: sys_limits[dedede_idx].psys_pl2_power
Could you please use 97% of the BJ power as Ben suggested.
```
watts = sys_limits[dedede_idx].psys_pl2_power;
psyspl2 = SET_PSYSPL2(config_psys->efficiency, watts);
```