[PATCH 3/4 v2] mtd/powerpc: Remove unused "device-width" property

[Scott Wood]

Stefan Roese wrote:
> This property is unused. It's not handled as all by the physmap_of
> driver. So let's remove it from the documentation.
> 
> Signed-off-by: Stefan Roese <sr at denx.de>
> CC: Grant Likely <grant.likely at secretlab.ca>

The device tree describes the hardware, not what Linux happens to do 
with it at the moment.

I'd rather keep it.

-Scott