dt-bindings: soc: qcom: smd-rpm: extend example

Replace existing limited example with proper code for Qualcomm Resource
Power Manager (RPM) over SMD based on MSM8916.  This also fixes the
example's indentation.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220723082358.39544-2-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.yaml

@@ -89,11 +89,32 @@ examples:
             qcom,smd-edge = <15>;
 
             rpm-requests {
-                        compatible = "qcom,rpm-msm8974";
+                compatible = "qcom,rpm-msm8916";
                 qcom,smd-channels = "rpm_requests";
 
-                        /* Regulator nodes to follow */
+                clock-controller {
+                    compatible = "qcom,rpmcc-msm8916", "qcom,rpmcc";
+                    #clock-cells = <1>;
+                    clocks = <&xo_board>;
+                    clock-names = "xo";
+                };
+
+                power-controller {
+                    compatible = "qcom,msm8916-rpmpd";
+                    #power-domain-cells = <1>;
+                    operating-points-v2 = <&rpmpd_opp_table>;
+
+                    rpmpd_opp_table: opp-table {
+                        compatible = "operating-points-v2";
+
+                        opp-1 {
+                            opp-level = <1>;
+                        };
+                        opp-2 {
+                            opp-level = <2>;
+                        };
+                    };
+                };
             };
         };
     };
-...