Small fixes for the Ebony device tree

[Segher Boessenkool]

> Sod it, I think I'll just drop everything except "ibm,sdram-440gp" for
> now.

Perfect plan :-)  And then 440GX, GR, etc. can claim
compatibility to 440GP, which is the nestor of the
family.

> If some later driver has to have an extra backwards
> compatibility id_table entry for the Ebony/440GP it's no great
> disaster.

Sure, mistakes happen.  They can be fixed in the
bootwrapper, too -- or just in the DTS file if your
device tree is shipped with the kernel.


Segher