Change in coreboot[master]: [RFC]device/pci_device.c: Add way to limit max bus numbers

[Arthur Heymans (Code Review)]

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Hello build bot (Jenkins), Jonathan Zhang, Arthur Heymans,

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

https://review.coreboot.org/c/coreboot/+/59395

to look at the new patch set (#7).

Change subject: [RFC]device/pci_device.c: Add way to limit max bus numbers
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[RFC]device/pci_device.c: Add way to limit max bus numbers

By default this limits PCI buses to CONFIG_MMCONF_BUS_NUMBER.
Some platforms have multiple PCI root busses (e.g. xeon_sp), where bus
numbers are limited. This provides a basic check. On some platforms it
looks like programming 0xff to the subordinate bus number confuses and
hangs the hardware.

Change-Id: I0582b156df1a5f76119a3687886c4d58f2d3ad6f
Signed-off-by: Arthur Heymans 
---
M src/device/pci_device.c
M src/include/device/device.h
2 files changed, 15 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/95/59395/7