arm64: dts: qcom: msm8916: Add Hexagon SMD edge

Add the Hexagon SMD edge, so that QRTR is probed when the Hexagon is
booted.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm64/boot/dts/qcom/msm8916.dtsi

@@ -848,6 +848,14 @@ smd_rpm_regulators: pm8916-regulators {
 				};
 			};
 		};
+
+		hexagon {
+			interrupts = <0 25 IRQ_TYPE_EDGE_RISING>;
+
+			qcom,smd-edge = <0>;
+			qcom,ipc = <&apcs 8 12>;
+			qcom,remote-pid = <1>;
+		};
 	};
 
 	hexagon-smp2p {