dt-bindings: net: dsa: realtek: reset-gpios is not required

The 'reset-gpios' should not be mandatory. although they might be
required for some devices if the switch reset was left asserted by a
previous driver, such as the bootloader.

Signed-off-by: Luiz Angelo Daros de Luca <[e-mail]>
Cc: [e-mail]
Acked-by: Arınç ÜNAL <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Reviewed-by: Alvin Šipraga <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

Documentation/devicetree/bindings/net/dsa/realtek.yaml

···
     - mdc-gpios
     - mdio-gpios
     - mdio
-    - reset-gpios
 
 required:
   - compatible