[PATCH] Two patches related to ARM TrustZone support

[Tim Northover]

Hi Mihail,

> Please see attached for review two patches related to ARM TrustZone.

I think these patches are reasonable. TrustZone isn't really part of
any numeric Architecture revision (v6, v7) but is an optional
extension many CPUs have. Adding it as default for the common CPUs is
probably a good idea too to avoid breaking peoples code.

I've committed the combined patches as r179171.

Cheers.

Tim