dt-bindings: mailbox: qcom: Add SM6115 APCS compatible

Add compatible for the Qualcomm SM4250/6115 APCS block to the Qualcomm
APCS binding.
Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.yaml

@@ -29,6 +29,7 @@ properties:
       - qcom,sdm660-apcs-hmss-global
       - qcom,sdm845-apss-shared
       - qcom,sm6125-apcs-hmss-global
+      - qcom,sm6115-apcs-hmss-global
       - qcom,sm8150-apss-shared
 
   reg: