dt-bindings: can: renesas,rcar-canfd: Fix typo in pattern properties for R-Car V4M

The Renesas R-Car V4M(R8A779H0) SoC, supports up to four channels.
Fix the typo 5->4 in pattern properties.

Fixes: ced52c6 ("dt-bindings: can: renesas,rcar-canfd: Document R-Car V4M support")
Cc: stable@vger.kernel.org
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: "Rob Herring (Arm)" <robh@kernel.org>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20250307170330.173425-2-biju.das.jz@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Author: bijudas

Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml

@@ -170,7 +170,7 @@ allOf:
             const: renesas,r8a779h0-canfd
     then:
       patternProperties:
-        "^channel[5-7]$": false
+        "^channel[4-7]$": false
     else:
       if:
         not: