Document the devicetree bindings for the random number generator found
on Hisilicon Hip04 and Hip05 soc.
Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: NRob Herring <rob@kernel.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>