dt-bindings: net: mscc-miim: Add resets property

Add the (optional) resets property.
The mscc-miim device is impacted by the switch reset especially when the
mscc-miim device is used as part of the LAN966x PCI device.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/mscc,miim.yaml

@@ -38,6 +38,16 @@ properties:
 
   clock-frequency: true
 
+  resets:
+    items:
+      - description:
+          Reset shared with all blocks attached to the Switch Core Register
+          Bus (CSR) including VRAP slave.
+
+  reset-names:
+    items:
+      - const: switch
+
 required:
   - compatible
   - reg