Device tree binding documentation

[Scott Wood]

Matt Sealey wrote:
> Maintaining them as text for the development process is good but
> they need to be *published* as the ePAPR binding is *published*,
> so that you can say.. "hey, this is a canonical reference on a
> dead tree, my platform confirms to the ePAPR MPC5200B device
> tree binding V1.0 that I ordered from the Freescale website",
> instead of "my platform conforms to git commit fab927fe363ac2a872bb872"

The latter is actually much less subject to change... :-)

-Scott