Add binding documentation for the Freescale RNGC found on
some i.MX2/3 SoCs.
Signed-off-by: NSteffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: NMartin Kaiser <martin@kaiser.cx>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>