dt-bindings: net: Add compatible for AM64x in ICSSG

Add compatible for AM64x in icssg-prueth dt bindings. AM64x supports
ICSSG similar to AM65x SR2.0.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml

@@ -19,6 +19,7 @@ allOf:
 properties:
   compatible:
     enum:
+      - ti,am642-icssg-prueth  # for AM64x SoC family
       - ti,am654-icssg-prueth  # for AM65x SoC family
 
   sram: