Re: dtc: Convert "name" property checking to new infrastructure

So, like, the other day David Gibson mumbled:

This patch removes the old-style checking code for the "name" property
- i.e. verifying that the "name" property, if present, matches the
node name.  It replaces it with a pair of more-or-less equivalent
checks in the new checking framework.

This also promotes this check to a "structural" check, or at least an
error-rather-than-warning test, since the structural/semantic
distinction doesn't really apply in the new framework.

A testcase for the check is also added.

Signed-off-by: David Gibson <redacted>

Applied.

jdl