drm.ko does not build on powerpc

[Super Biscuit]

I'm using SNAPSHOT-9 (Current) powerpc from people.freebsd.org/~whitehorn.

The build in /usr/src/sys/.../drm/drm stops with specialreg.h
Using find -f /|grep specialreg.h only shows the file in x86, amd64, and pc98.
I already have agp.ko built.
Does this require cross compiling or is a "prebuilt" drm.ko for ppc32 available?
If it does require cross compiling or even importing- I have a few i386 machines- How would I enable or use it on ppc?
Thanks/