Instead of predicting MSI-X bar basing on mac type, read it from device
This patch resolves PR 239704.
Is there a reason that we wouldn't do this for all of our drivers, instead of hardcoding the BAR index?
I agree with Eric, we should depend on the device to be configured properly, and push to get the images for the device updated if they're wrong.
If the BAR varies across devices, I think using pci_msix_table_bar is probably the simplest thing to do.