arm64: dts: renesas: r8a77980: add resets property to CAN-FD node

Add resets property to CAN-FD node to describe it in the reset topology of
on-SoC devices.  This allows to reset the CAN-FD device using the Reset
Controller API.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a77980.dtsi

@@ -190,6 +190,7 @@ canfd: can@e66c0000 {
 			assigned-clocks = <&cpg CPG_CORE R8A77980_CLK_CANFD>;
 			assigned-clock-rates = <40000000>;
 			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
+			resets = <&cpg 914>;
 			status = "disabled";
 
 			channel0 {