dt-bindings: arm: bcmbca: Add Genexis XG6846B

This adds the device tree bindings for the Genexis XG6846B
router/gateway/broadband modem.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241019-genexis-xg6846b-base-v3-8-8375a0e1f89f@linaro.org
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

Author: Linus Walleij

Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml

@@ -115,6 +115,7 @@ properties:
         items:
           - enum:
               - brcm,bcm96846
+              - genexis,xg6846b
           - const: brcm,bcm6846
           - const: brcm,bcmbca