ARM: dts: sun7i: Add CAN node

The A20 SoC has an on-board CAN controller.
This patch adds the device node.

The CAN controller is inherited from the A10 SoC and uses the same driver.

This patch is adapted from the description in
Documentation/devicetree/bindings/net/can/sun4i_can.txt
Signed-off-by: Patrick Menschel <menschel.p@posteo.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun7i-a20.dtsi

@@ -1581,6 +1581,15 @@ i2c3: i2c@01c2b800 {
 			#size-cells = <0>;
 		};
 
+		can0: can@01c2bc00 {
+			compatible = "allwinner,sun7i-a20-can",
+				     "allwinner,sun4i-a10-can";
+			reg = <0x01c2bc00 0x400>;
+			interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&apb1_gates 4>;
+			status = "disabled";
+		};
+
 		i2c4: i2c@01c2c000 {
 			compatible = "allwinner,sun7i-a20-i2c",
 				     "allwinner,sun4i-a10-i2c";