ARCH=ppc or ARCH=powerpc

[Shawn Jin]

Hi Matt,

> The goal is to have the new 4xx arch/powerpc support not break 4xx
> arch/ppc support. So as boards are merged and verified working,
> we'll remove the equivalent support from arch/ppc...
>
> Some boards/chips may just die if no maintainer step up to port
> them over...but all the important stuff should get an interested
> party once we get the initial 4xx support in arch/powerpc working.

When can we expect this done? I have a 440 based SoC project ongoing
and am thinking when I should start moving to arch/powerpc.

THanks,
-Shawn.