Stupid driver makes a copy of struct pci_attach_args.  Make sure we clear the MSI enabled flag there such that the driver actually pays attention to it. Found out the hard way by Chris Smith on an 82540EM, which defenitely does not like MSI.
Stupid driver makes a copy of struct pci_attach_args.  Make sure we clear
the MSI enabled flag there such that the driver actually pays attention to it.
Found out the hard way by Chris Smith on an 82540EM, which defenitely does
not like MSI.

ok deraadt@

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