loader: default to iris for all future PCI IDs
The existing "fallback" code didn't actually do anything, so this
removes it, and instead we just always fallback to iris
for future
PCI IDs, as suggested by @kwg.
The existing "fallback" code didn't actually do anything, so this
removes it, and instead we just always fallback to iris
for future
PCI IDs, as suggested by @kwg.