dt-bindings: aspeed: Add silicon id node to SCU

	#clock-cells = <1>;

	#reset-cells = <1>;

};

Silicon ID

-----------------

Families have unique hardware silicon identifiers within the SoC.

Required properties:

 - compatible:		"aspeed,silicon-id" or:

			"aspeed,ast2400-silicon-id" or

			"aspeed,ast2500-silicon-id" or

			"aspeed,ast2600-silicon-id"

 - reg:			offset and length of the silicon id information

			optionally, a second offset and length describes the unique chip id

			The reg should be the unique silicon id register, and

			not backwards compatible one in eg. the 2600.

Example:

silicon-id@7c {

        compatible = "aspeed,ast2500-silicon-id", "aspeed,silicon-id";

        reg = <0x7c 0x4 0x150 0x8>;

};