Instead let each driver call it.

radeonsi ignores the error because it doesn't require correct
pci-bus info to work properly.

radv keeps the existing behavior and fails if the pci-bus infos
is missing.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <!20645>