SPARC64: getting "no compatible bridge window" errors :/

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Hello!!

I hope this is the right place for this. In my dmesg output, I get things like:

```
pci 0000:04:00.0: can't claim VGA legacy [mem 0x000a0000-0x000bffff]: no compatible bridge window
pci 0000:06:00.0: can't claim VGA legacy [mem 0x000a0000-0x000bffff]: no compatible bridge window
pci 0000:06:00.1: can't claim BAR 0 [mem 0x84110200000-0x84110203fff 64bit]: no compatible bridge window
```

I opened a bug for amdgpu [here](https://gitlab.freedesktop.org/drm/amd/-/issues/2169) but looking further into it I think it is caused by deeper PCIe problems :\

https://gitlab.freedesktop.org/drm/amd/uploads/cbf47807972c8a990bb2a8cdbb39ad9e/8C7CA9QNG dmesg log
https://gitlab.freedesktop.org/drm/amd/uploads/6a799425dea50febd82f8bc11e54433a/ll.txt lspci -vv
https://gitlab.freedesktop.org/drm/amd/uploads/7d4a794b1f7d67a1ffcdee5dfdec3ad6/config.txt kernel .config
There's a tad more info attached to that bug if needed :D

I greatly appreciate your time (:



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