I have a feeling I'm going to need to commit some super early
reach-through sins for this stuff so Indy
and Indigo2 machines with the 3D framebuffers aren't absolutely
terrible during early boot.
I ran into something similar a couple of months ago due to gio and imc depending on the Indy's subtype being set already by ioc. The attached kludge resolved those both (since gio attaches to imc).
It's a bit ugly, but the same could probably be done for int.