mfd: qcom-spmi-pmic: Add pm8953 compatible

Document the compatible for pm8953 as found in msm8953.

Signed-off-by: Luca Weiss <[e-mail]>
Acked-by: Konrad Dybcio <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt

···
                    "qcom,pm8916",
                    "qcom,pm8941",
                    "qcom,pm8950",
+                   "qcom,pm8953",
                    "qcom,pm8994",
                    "qcom,pm8998",
                    "qcom,pma8084",