mfd: qcom-spmi-pmic: Add support for four variants

Add support for pm8350c, pmk8350, pm7325 and pmr735a PMICS.
Signed-off-by: satya priya <skakit@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

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

@@ -34,6 +34,10 @@ Required properties:
                    "qcom,pm8998",
                    "qcom,pmi8998",
                    "qcom,pm8005",
+                   "qcom,pm8350c",
+                   "qcom,pmk8350",
+                   "qcom,pm7325",
+                   "qcom,pmr735a",
                    or generalized "qcom,spmi-pmic".
 - reg:             Specifies the SPMI USID slave address for this device.
                    For more information see: