[PATCH] use of /proc/iomem in 8xx boards

[Jeremy Rosen]

Here is a patch to have the memory map displayed in /proc/iomem.
it was mainly adapted from arch/ppc/i386/kernel/setup.c

I have tested it with my board ( FADS with an 860T ) but I didn't test
for other board.
This also mean that the names for the IO regions of other board were my
best guess :-)

Thx

Jeremy

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