it's entirely safe to ignore these messages.
those modules are for enterprise-level storage controllers, so even if they were totally broken (which they aren't) it would not be a problem unless you were installing a Fedora 12 pre-release on an extremely expensive box which probably holds critical data for an entire company and causes you to lose your job if it falls over. So, uh, yeah, the people who use those modules are not running Fedora 12 Beta on 'em. =)
(in fact there's not really any 'bug' here anyway; those firmwares are 'missing' because they're not redistributable, and in one case the firmware is actually provided by a different mechanism when you actually have that hardware anyway. if there's a bug, it's that we could probably filter the predictable, non-problematic cases of these messages out.)