Implementing MCP2517FD module on Verdin

@Edward big thanks for the explanation, that really makes sense now.

This is my current external CAN node definition and Im still having the same errors in dmesg:

&pinctrl_gpio4{
       /* changing gpio5_27 pin settings */ 
	fsl,pins = <
		MX8MM_IOMUXC_UART3_TXD_GPIO5_IO27		0x1c4	/* SODIMM 212 */
	>;
};

&ecspi2 {
	#address-cells = <1>;
	#size-cells = <0>;
	cs-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
	/* This property is required, even if marked as obsolete in the doku */
	fsl,spi-num-chipselects = <1>;
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_ecspi2>;
	status = "okay";
	
	can3: can@0 {
		compatible = "microchip,mcp2517fd";
		clocks = <&clk20m>;
		gpio-controller;
		/* dev board gpio4 pin -> gpio5_27 */
		interrupt-parent = <&gpio5>;
		interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
		microchip,clock-allways-on;
		microchip,clock-out-div = <1>;
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_gpio4>;
		reg = <0>;
		spi-max-frequency = <2000000>;
		status = "okay";
	};
};