p620 hangs instantiating rtas at 0x00000000deadbeef

[Benjamin Herrenschmidt]

> > Yes, definitely looks like a firmware bug to me. This return value is
> > just insane.
> 
> It still hangs later, have to try a plain 2.6.10.

Well, a different problem then. Note that the fix for the prom_claim
problem should be in the prom_claim() wrapper itself, and the zImage
wrapper probably wants a similar "workaround".

Ben