RFC: arch/powerpc Kconfig cleanup

[Arnd Bergmann]

On Friday 16 March 2007, Kumar Gala wrote:
> >
> > At some point we should also separate the common code (mostly spufs)
> > from the cell native support that does not apply to ps3 and celleb.
> 
> Fair point, I'll fix that up.  I'm more interested if people are ok  
> with having the 'Cell Broadband Engine options' under 'Platform  
> support' is ok or if it should stay at the top level.

I was never happy with having it at the top level, but I couldn't
figure out a better way at the time, and I think I just copied what
some other platforms did.

I think it would be good to turn them into menuconfig entries, so
that if platforms/Kconfig basically contains

source arch/powerpc/platforms/pseries/Kconfig
source arch/powerpc/platforms/powermac/Kconfig
source arch/powerpc/platforms/cell/Kconfig
source arch/powerpc/platforms/celleb/Kconfig
source arch/powerpc/platforms/ps3/Kconfig
...

each of them can either be

config CELLEB
	bool "support for celleb"
	select FOO
	select BAR

or

menuconfig PSERIES
	bool "support for pseries"
	select BAR
	select BAZ
config PSERIES_FOO
	bool "option foo for pseries"
	depends on PSERIES
endmenu

	Arnd <><