* Renesas RH850 CAN *

This driver implements spi slave protocol for rh850 can controller

Required properties:
  - compatible: Should be "renesas,rh850"
  - reg: Should contain spi chip select
  - interrupt-parent: Should specify interrupt controller for the interrupt
  - interrupts: Should contain IRQ line for the CAN controller
  - spi-max-frequency: Should contain maximum spi clock frequency for
                       slave device

Example:

	can-controller@0 {
		compatible = "renesas,rh850";
		reg = <0>;
		interrupt-parent = <&tlmm>;
		interrupts = <127 0>;
		spi-max-frequency = <5000000>;
	};