[S] Change in coreboot[main]: mb/google/nissa: Create sundance variant

[Eric Lai (Code Review)]

Attention is currently required from: Derek Huang, Dinesh Gehlot, Kapil Porwal, Leo Chou, Nick Vaccaro, Shou-Chieh Hsu, Subrata Banik.

Eric Lai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81347?usp=email )

Change subject: mb/google/nissa: Create sundance variant
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Patch Set 1:

(1 comment)

File src/mainboard/google/brya/variants/sundance/memory/dram_id.generated.txt:

https://review.coreboot.org/c/coreboot/+/81347/comment/0ef24b04_750c18ff :
PS1, Line 2: 
Check that files end with a single newline (lint-extended-015-final-newlines): src/mainboard/google/brya/variants/sundance/memory/dram_id.generated.txt has multiple final newlines.
src/mainboard/google/brya/variants/sundance/memory/mem_parts_used.txt has multiple final newlines.
test failed