[coreboot] [RFC] Drop PowerPC port

[Stefan Reinauer]

Hi,

in the progress of restructuring coreboot to work with CBFS, Kconfig and
other new features, we basically broke the PowerPC boards. Since none of
us has any of the supported hardware available for testing, and there is
no real reason to use coreboot on PowerPC processors (there are fine
bootloaders, like u-boot), we have been discussing to drop the PowerPC
port completely if nobody is willing to step up and revive it. Comments?

Stefan