dt-bindings: pinctrl-zynqmp: Add output-enable configuration

Add 'output-enable' configuration parameter to the properties list.
Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1655462819-28801-3-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml

@@ -274,6 +274,10 @@ patternProperties:
           slew-rate:
             enum: [0, 1]
 
+          output-enable:
+            description:
+              This will internally disable the tri-state for MIO pins.
+
           drive-strength:
             description:
               Selects the drive strength for MIO pins, in mA.