dt-bindings: net: qcom,ipa: finish the qcom,smp2p example

The example using qcom,smp2p should have all necessary properties, to
avoid DT schema validation warnings.
Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220402155551.16509-2-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/net/qcom,ipa.yaml

@@ -182,6 +182,12 @@ examples:
 
         smp2p-mpss {
                 compatible = "qcom,smp2p";
+                interrupts = <GIC_SPI 576 IRQ_TYPE_EDGE_RISING>;
+                mboxes = <&apss_shared 6>;
+                qcom,smem = <94>, <432>;
+                qcom,local-pid = <0>;
+                qcom,remote-pid = <5>;
+
                 ipa_smp2p_out: ipa-ap-to-modem {
                         qcom,entry-name = "ipa";
                         #qcom,smem-state-cells = <1>;
@@ -193,6 +199,7 @@ examples:
                         #interrupt-cells = <2>;
                 };
         };
+
         ipa@1e40000 {
                 compatible = "qcom,sdm845-ipa";