arm64: dts: renesas: eagle: add CAN-FD support

Define the Eagle board dependent part of the CAN-FD device node.

Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a77970-eagle.dts

@@ -95,6 +95,16 @@ phy0: ethernet-phy@0 {
 	};
 };
 
+&canfd {
+	pinctrl-0 = <&canfd0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	channel0 {
+		status = "okay";
+	};
+};
+
 &extal_clk {
 	clock-frequency = <16666666>;
 };
@@ -156,6 +166,11 @@ avb_pins: avb0 {
 		function = "avb0";
 	};
 
+	canfd0_pins: canfd0 {
+		groups = "canfd0_data_a";
+		function = "canfd0";
+	};
+
 	i2c0_pins: i2c0 {
 		groups = "i2c0";
 		function = "i2c0";