Enable MSI on newish PCIe hardware, essentially everything handled by the Linux e1000e driver (which enables MSI as well), leaving everything handled by the old Linux e1000 driver (which doesn't enable MSI) use legacy interrupts.
Enable MSI on newish PCIe hardware, essentially everything handled by the Linux
e1000e driver (which enables MSI as well), leaving everything handled by the
old Linux e1000 driver (which doesn't enable MSI) use legacy interrupts.

tested by many; ok jsg@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars