Hisilicon Random Number Generator

Required properties:
- compatible : Should be "hisilicon,hip04-rng" or "hisilicon,hip05-rng"
- reg : Offset and length of the register set of this block

Example:

rng@d1010000 {
 compatible = "hisilicon,hip05-rng";
 reg = <0xd1010000 0x100>;
};