RFC Add dynamic id support to all USB drivers

Here's two patches against the latest -git tree that add the ability to add new vendor/product device id pairs to USB drivers after they have been loaded. It works just like the PCI drivers do, with the exception that only vendor/product can be specified (no class stuff.) I did it this way to make it simpler, as that's almost all anyone ever wants to add.

Note that usb-serial drivers do not work properly with these dynamic ids yet, it's going to take some rework of the usb-serial core due to the wierd way it binds drivers to devices to get this to work properly.

Comments?

thanks,

greg k-h