dt-bindings: can: rcar_canfd: Group tuples in pin control properties

To improve human readability and enable automatic validation, the tuples
in "pinctrl-*" properties should be grouped using angle brackets.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20210204125937.1646305-1-geert+renesas@glider.beSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/net/can/rcar_canfd.txt

@@ -97,7 +97,7 @@ E.g. below enables Channel 0 alone in the board using External clock
 as fCAN clock.
 
 &canfd {
-	pinctrl-0 = <&canfd0_pins &can_clk_pins>;
+	pinctrl-0 = <&canfd0_pins>, <&can_clk_pins>;
 	pinctrl-names = "default";
 	status = "okay";