dt-bindings: mailbox: qcom: add compatible for MSM8226 SoC

Add the mailbox compatible for MSM8226 SoC.

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>

Author: z3ntu

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

@@ -26,6 +26,7 @@ properties:
           - const: qcom,ipq6018-apcs-apps-global
       - items:
           - enum:
+              - qcom,msm8226-apcs-kpss-global
               - qcom,qcs404-apcs-apps-global
           - const: qcom,msm8916-apcs-kpss-global
           - const: syscon