Renesas Product Register

Most Renesas ARM SoCs have a Product Register or Boundary Scan ID Register that
allows to retrieve SoC product and revision information.  If present, a device
node for this register should be added.

Required properties:
  - compatible: Must be one of:
    "renesas,prr"
    "renesas,bsid"
  - reg: Base address and length of the register block.


Examples
--------

	prr: chipid@ff000044 {
		compatible = "renesas,prr";
		reg = <0 0xff000044 0 4>;
	};