dt-bindings: pinctrl: pinctrl-microchip-sgpio: Add reset binding

This describes the new binding which allows to call a reset driver from
the pinctrl-microchip-sgpio driver.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211018085754.1066056-2-horatiu.vultur@microchip.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/microchip,sparx5-sgpio.yaml

@@ -68,6 +68,13 @@ properties:
       clock, and larger than zero.
     default: 12500000
 
+  resets:
+    maxItems: 1
+
+  reset-names:
+    items:
+      - const: switch
+
 patternProperties:
   "^gpio@[0-1]$":
     type: object