Change in coreboot[master]: broadwell boards: Do not set `ddr_refresh_2x` again

[Angel Pons (Code Review)]

Attention is currently required from: Nico Huber, Matt DeVillier, Arthur Heymans, Patrick Rudolph.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55810 )

Change subject: broadwell boards: Do not set `ddr_refresh_2x` again
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Patch Set 9:

(1 comment)

File src/mainboard/google/auron/variants/buddy/spd/spd.c:

https://review.coreboot.org/c/coreboot/+/55810/comment/79aa027b_80a317f4 
PS9, Line 13: 	pei_data->ddr_refresh_2x = 1;
> I looked through the (internal) board's development history. […]

Alright, thanks for checking.

On a related note, should 2x refresh mode be configurable for non-Google boards? I don't think so because other boards may also be susceptible to rowhammer attacks, but I'd like to know your thoughts.