dt-bindings: clock: Add support for the MSM8226 mmcc

Document the multimedia clock controller found on MSM8226.
Signed-off-by: Bartosz Dudziak <bartosz.dudziak@snejp.pl>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220207185411.19118-2-bartosz.dudziak@snejp.pl

Documentation/devicetree/bindings/clock/qcom,mmcc.yaml

@@ -19,6 +19,7 @@ properties:
     enum:
       - qcom,mmcc-apq8064
       - qcom,mmcc-apq8084
+      - qcom,mmcc-msm8226
       - qcom,mmcc-msm8660
       - qcom,mmcc-msm8960
       - qcom,mmcc-msm8974