[wwwdocs] Announce PRU backend

[Dimitar Dimitrov]

On сряда, 19 юни 2019 г. 13:23:01 EEST Jeff Law wrote:
> On 6/19/19 11:06 AM, Dimitar Dimitrov wrote:
> > Hi,
> > 
> > This WWW update announces the new PRU port in WWW docs, and fills in the
> > backend characteristics.
> OK
> jeff
Thank you. Pushed to CVS.

Dimitar