dt-bindings: mfd: syscon: Add microchip,lan966x-cpu-syscon compatible

Add the Microchip LAN966x CPU system registers compatible.
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220313003122.19155-1-michael@walle.cc

Documentation/devicetree/bindings/mfd/syscon.yaml

@@ -48,6 +48,7 @@ properties:
               - marvell,armada-3700-usb2-host-misc
               - mediatek,mt8135-pctl-a-syscfg
               - mediatek,mt8135-pctl-b-syscfg
+              - microchip,lan966x-cpu-syscon
               - microchip,sparx5-cpu-syscon
               - mstar,msc313-pmsleep
               - rockchip,px30-qos