Add rng as a standard node name
Add rng as a standard node name

Random number generators (RNGs) are devices. Add it as a standard node
name.

Signed-off-by: Stephen Boyd <010521127f513270fe503d86ab8316ac5147f4b7@kernel.org>
Signed-off-by: Rob Herring <fbb37eacae100e13076d5c4b46f06cfa4d6fa9f8@kernel.org>

devicetree-org/devicetree-specification