dt-bindings: arm: qcom: Add Lenovo Yoga Slim 7x

Document the x1e80100 based Lenovo Yoga Slim 7x laptop.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240703-yoga-slim7x-v2-1-3b297dab8db1@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -1039,6 +1039,7 @@ properties:
       - items:
           - enum:
               - asus,vivobook-s15
+              - lenovo,yoga-slim7x
               - qcom,x1e80100-crd
               - qcom,x1e80100-qcp
           - const: qcom,x1e80100