[S] Change in coreboot[main]: soc/amd/common: Add ACP device to common block graphics driver

[CoolStar (Code Review)]

Attention is currently required from: Felix Held, Fred Reitberger, Jason Glenesk, Matt DeVillier.

Hello Felix Held, Fred Reitberger, Jason Glenesk, Matt DeVillier,

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

https://review.coreboot.org/c/coreboot/+/78430?usp=email

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

Change subject: soc/amd/common: Add ACP device to common block graphics driver
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soc/amd/common: Add ACP device to common block graphics driver

Supports a brand new ACP driver for STONEY / Grunt chromebooks.
AMD's Audio CoProcessor handles i2s/tdm audio, and is located on the
GPU.

On Windows the PCIe device for the GPU is owned by the AMD proprietary
driver, hence a separate device has to be added for the ACP driver.

Fortunately since IOMMU is disabled on STONEY, the driver itself can
pull BAR5 from the GPU and use that to initialize, so no special
configuration is required in ACPI other than the ID.

Change-Id: I0e31c3b31fa9fb99578c04b79fce2d8c1d695561
Signed-off-by: CoolStar 
---
M src/soc/amd/common/block/graphics/Kconfig
M src/soc/amd/common/block/graphics/graphics.c
2 files changed, 21 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/78430/3