dt-bindings: net: lan966x: fix example

In commit 4fdabd50 ("dt-bindings: net: lan966x: remove PHY reset")
the PHY reset was removed, but I failed to remove it from the example.
Fix it.

Fixes: 4fdabd50 ("dt-bindings: net: lan966x: remove PHY reset")
Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220503132038.2714128-1-michael@walle.ccSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml

@@ -145,8 +145,8 @@ examples:
       reg-names = "cpu", "gcb";
       interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
       interrupt-names = "xtr";
-      resets = <&switch_reset 0>, <&phy_reset 0>;
-      reset-names = "switch", "phy";
+      resets = <&switch_reset 0>;
+      reset-names = "switch";
       ethernet-ports {
         #address-cells = <1>;
         #size-cells = <0>;