Fix ARMv7 memory typing

Fix ARMv7 memory typing

* Russell King - ARM Linux <linux@arm.linux.org.uk> [081103 07:09]:
> Solving ARMv7 seems to be fairly simple, at the expense of making
> build_mem_types_table() slightly more complex.  If that was the only
> problem, then I wouldn't be mentioning the idea of dropping the
> patchset.

Well, this is the fix for ARMv7 (and a few others).  In making these
changes, I went back to DDI0100I (ARMv6 ARM), DDI0406A (ARMv7 ARM)
and the Marvell Xscale3 documentation.
...

Note that this version has a bug with xscale handling, but works
for omap. This patch will get reverted once the final patch is
available.

Signed-off-by: Tony Lindgren <tony@atomide.com>