Change in coreboot[master]: mb/google/brya: Add new baseboard nissa with variants nivviks and nereid

[Reka Norman (Code Review)]

Attention is currently required from: Reka Norman, Kangheui Won, Tim Wawrzynczak.
Hello build bot (Jenkins), Reka Norman, Kangheui Won, Tim Wawrzynczak,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/60271

to look at the new patch set (#3).

Change subject: mb/google/brya: Add new baseboard nissa with variants nivviks and nereid
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mb/google/brya: Add new baseboard nissa with variants nivviks and nereid

Add a new baseboard for nissa, an Intel ADL-N based reference design.
Also add variants for the two reference boards, nivviks and nereid.
This commit is a stub which only adds the minimum code needed for a
successful build.

BUG=b:197479026
TEST=abuild -a -x -c max -p none -t google/brya -b nivviks
     abuild -a -x -c max -p none -t google/brya -b nereid

Change-Id: I2a3975fb7a45577fec8ea7c6c9f6ea042ab8cba5
Signed-off-by: Reka Norman 
---
M src/mainboard/google/brya/Kconfig
M src/mainboard/google/brya/Kconfig.name
A src/mainboard/google/brya/variants/baseboard/nissa/Makefile.inc
A src/mainboard/google/brya/variants/baseboard/nissa/devicetree.cb
A src/mainboard/google/brya/variants/baseboard/nissa/gpio.c
A src/mainboard/google/brya/variants/baseboard/nissa/include/baseboard/ec.h
A src/mainboard/google/brya/variants/baseboard/nissa/include/baseboard/gpio.h
A src/mainboard/google/brya/variants/baseboard/nissa/memory.c
A src/mainboard/google/brya/variants/nereid/include/variant/ec.h
A src/mainboard/google/brya/variants/nereid/include/variant/gpio.h
A src/mainboard/google/brya/variants/nereid/overridetree.cb
A src/mainboard/google/brya/variants/nivviks/include/variant/ec.h
A src/mainboard/google/brya/variants/nivviks/include/variant/gpio.h
A src/mainboard/google/brya/variants/nivviks/overridetree.cb
14 files changed, 182 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/60271/3