[M] Change in coreboot[master]: mb/google/myst: Add new mainboard

[Jon Murphy (Code Review)]

Attention is currently required from: Raul Rangel, Martin L Roth, Jon Murphy, Eric Lai, Martin Roth, Tim Van Patten, Karthik Ramasubramanian, Mark Hasemeyer.

Hello build bot (Jenkins), Raul Rangel, Martin L Roth, Martin Roth, Fred Reitberger, Tim Van Patten, Karthik Ramasubramanian, Felix Held, Mark Hasemeyer,

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

https://review.coreboot.org/c/coreboot/+/74093

to look at the new patch set (#8).

Change subject: mb/google/myst: Add new mainboard
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mb/google/myst: Add new mainboard

Myst is a new Google mainboard with an AMD Phoenix SOC.

BUG=b:270596106
TEST=util/abuild/abuild -t GOOGLE_MYST --clean

Signed-off-by: Jon Murphy 
Change-Id: Id7d731ce4d6cb6d4e9041f46eb5a799865bb0b9a
---
A src/mainboard/google/myst/Kconfig
A src/mainboard/google/myst/Kconfig.name
A src/mainboard/google/myst/Makefile.inc
A src/mainboard/google/myst/board_info.txt
A src/mainboard/google/myst/bootblock.c
A src/mainboard/google/myst/chromeos.fmd
A src/mainboard/google/myst/dsdt.asl
A src/mainboard/google/myst/mainboard.c
A src/mainboard/google/myst/port_descriptors.c
A src/mainboard/google/myst/variants/baseboard/devicetree.cb
A src/mainboard/google/myst/variants/baseboard/include/baseboard/variants.h
11 files changed, 188 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/93/74093/8