Support ePAPR compliant phandle properties

[Jon Loeliger]

> Currently, the Linux kernel, libfdt and dtc, when using flattened
> device trees encode a node's phandle into a property named
> "linux,phandle".  The ePAPR specification, however - aiming as it is
> to not be a Linux specific spec - requires that phandles be encoded in
> a property named simply "phandle".
> 
> This patch adds support for this newer approach to dtc and libfdt.
>
> ...
>
> Signed-off-by: David Gibson <david at gibson.dropbear.id.au>

Applied.

Thanks,
jdl