boards in arch/ppc -> arch/powerpc for 85xx

Guys,

I was wondering if you cared about the following boards existing in  
arch/powerpc:

* STX GP3
* TQM 85xx
* SBC 8560

I'm told WR doesn't care about the SBC 8560, so I'll see if David does.

I'm willing to look into doing the port over, but would need some  
help testing.

- k