It's weird that you prefer having the PCI device shown in "System Profiler" which is purely cosmetic, over having its properties detected and set automatically.
Anyway, the reason for that is, when you set the device-properties in the Boot.plist it's used instead of the auto-generated one by the booter, there is no support (yet) to merge them into one.
Oh, and could you just post a link instead of a complete quote?