Connecting to "PCI command write" interrupt on 4xx platforms

[Benjamin Herrenschmidt]

> I will try to add endpoint support for PCI as well. I would like to have a single PCI node and
> let the device_type attribute decide if we are running in hostbridge or endpoint mode.

Don't use device_type. Do the same we do for PCI-E (whatever it is, I
don't have the source code at hand right now).

Cheers,
Ben.