[L] Change in coreboot[main]: device/device.h: Drop multiple links

[Arthur Heymans (Code Review)]

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

Hello Felix Held, Fred Reitberger, Jason Glenesk, Martin L Roth, Matt DeVillier,

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

https://review.coreboot.org/c/coreboot/+/78328?usp=email

to look at the new patch set (#2).

Change subject: device/device.h: Drop multiple links
......................................................................

device/device.h: Drop multiple links

Multiple links are unused throughout the tree and make the code more
confusing as an iteration over all busses is needed to get downstream
devices. This also not done consistently e.g. the allocator does not
care about multiple links on busses. A better way of dealing multiple
links below a device is to feature dummy devices with each their
respective bus.

This drops the sconfig capability to declare the same device multiple
times which was previously used to declare multiple links.

Signed-off-by: Arthur Heymans 
Change-Id: Iab6fe269faef46ae77ed1ea425440cf5c7dbd49b
---
M src/arch/x86/mpspec.c
M src/device/device.c
M src/device/device_util.c
M src/device/pci_device.c
M src/device/root_device.c
M src/include/device/device.h
M src/northbridge/amd/pi/00730F01/northbridge.c
M src/soc/amd/common/block/acpi/ivrs.c
M src/soc/amd/common/block/lpc/lpc.c
M src/soc/amd/stoneyridge/northbridge.c
M src/soc/intel/common/block/lpc/lpc.c
M src/southbridge/amd/pi/hudson/lpc.c
M util/sconfig/main.c
M util/sconfig/sconfig.h
M util/sconfig/sconfig.tab.c_shipped
M util/sconfig/sconfig.y
16 files changed, 187 insertions(+), 388 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/28/78328/2