Merge isa_machdep.c from netwinder and cats into footbridge/isa (where it
joins other machdep files)
Saves maintaining multiple copies of the same thing, the only differences
were:
IRQ line used on t

Merge isa_machdep.c from netwinder and cats into footbridge/isa (where it
joins other machdep files)
Saves maintaining multiple copies of the same thing, the only differences
were:
IRQ line used on the footbridge (made that a define in include/isa_machdep.h)
name of a dma_ranges variable contained arch name, so just made it generic.

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Finish up the changes to get LOOSE_PROTOTYPES working for cats.
Note that this leaves a few inconsistencies (no more than we already had though) eg initarm is now prototyped in arm32/machdep.h, howev

Finish up the changes to get LOOSE_PROTOTYPES working for cats.
Note that this leaves a few inconsistencies (no more than we already had though) eg initarm is now prototyped in arm32/machdep.h, however only cats currently makes use of that header.

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Reintroduce these header files so that cats kernels can build. Fallout from Jason reverting the includes stuff.

Finish off the cats arch dir by creating an include dir and populating it from
arm32/include.
Make use of std.cats in the kernel config.

Fixup files.cats so it actually works.