[PATCH REPOST] Add test for re-defining an identical label

[Jon Loeliger]

> On Tue, Jul 03, 2012 at 02:09:30PM -0600, Stephen Warren wrote:
> > From: Stephen Warren <swarren at nvidia.com>
> > 
> > When merging one device tree over the top of a previous tree, it is
> > possible to define a duplicate label that has the same name and points
> > to the same property or node. This is currently allowed by the duplicate
> > label checking code. However, alternative duplicate label checking
> > algorithms might not allow this. Add an explicit test to ensure this
> > capability is maintained.
> 
> Sorry, I've been on leave and haven't really had brainspace to think
> about this.  I think you're right though, whatever else we do with
> stuff we do want to allow redefinition of labels as long as they
> attach to the same thing (i.e. same path, and property within that
> path when applicable).  Labels within property values do get curly if
> that property is altered, but that doesn't directly affect this test.
> 
> > Signed-off-by: Stephen Warren <swarren at nvidia.com>
> 
> Acked-by: David Gibson <david at gibson.dropbear.id.au>

Applied.

Thanks,
jdl