dt-bindings: net: can: rcar_can: Document r8a77961 support

Document SoC specific bindings for R-Car M3-W+ (r8a77961) SoC.

Also as R8A7796 is now called R8A77960 so that update those
references.

Link: https://lore.kernel.org/r/20210409000020.2317696-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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

@@ -19,7 +19,8 @@ Required properties:
 	      "renesas,can-r8a7793" if CAN controller is a part of R8A7793 SoC.
 	      "renesas,can-r8a7794" if CAN controller is a part of R8A7794 SoC.
 	      "renesas,can-r8a7795" if CAN controller is a part of R8A7795 SoC.
-	      "renesas,can-r8a7796" if CAN controller is a part of R8A7796 SoC.
+	      "renesas,can-r8a7796" if CAN controller is a part of R8A77960 SoC.
+	      "renesas,can-r8a77961" if CAN controller is a part of R8A77961 SoC.
 	      "renesas,can-r8a77965" if CAN controller is a part of R8A77965 SoC.
 	      "renesas,can-r8a77990" if CAN controller is a part of R8A77990 SoC.
 	      "renesas,can-r8a77995" if CAN controller is a part of R8A77995 SoC.
@@ -40,7 +41,7 @@ Required properties:
 - pinctrl-names: must be "default".
 
 Required properties for R8A774A1, R8A774B1, R8A774C0, R8A774E1, R8A7795,
-R8A7796, R8A77965, R8A77990, and R8A77995:
+R8A77960, R8A77961, R8A77965, R8A77990, and R8A77995:
 For the denoted SoCs, "clkp2" can be CANFD clock. This is a div6 clock and can
 be used by both CAN and CAN FD controller at the same time. It needs to be
 scaled to maximum frequency if any of these controllers use it. This is done