dt-bindings: firmware: document Qualcomm SM6115 SCM

Document the compatible for Qualcomm  SM6115 SCM.
Signed-off-by: NAdam Skladowski <a39.skl@gmail.com>
Acked-by: NKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: NBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220815100952.23795-8-a39.skl@gmail.com

Documentation/devicetree/bindings/firmware/qcom,scm.yaml

@@ -44,6 +44,7 @@ properties:
           - qcom,scm-sdm845
           - qcom,scm-sdx55
           - qcom,scm-sdx65
+          - qcom,scm-sm6115
           - qcom,scm-sm6125
           - qcom,scm-sm6350
           - qcom,scm-sm8150