* Generic helper function name change, s/pdev_set_mwi/pci_generic_prep_mwi/
* Fix: Generic helper function ifdef'd out if arch function present
* PCI MWI arch handler name change, s/pcibios_set_mwi/pcibios_prep_mwi/
* Fix typos and speling errors in comments.
* Cleanup printk message a bit.