arm64: dts: msm8996: Add SMP2P and APCS nodes

Add SMP2P and APCS DT nodes required for Qualcomm ADSP
Peripheral Image Loader.

Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm64/boot/dts/qcom/msm8996.dtsi

@@ -282,6 +282,11 @@
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		apcs: syscon@9820000 {
+			compatible = "syscon";
+			reg = <0x9820000 0x1000>;
+		};
+
 		gcc: clock-controller@300000 {
 			compatible = "qcom,gcc-msm8996";
 			#clock-cells = <1>;
@@ -511,5 +516,29 @@
 					       <825000000>;
 		};
 	};
+
+	adsp-smp2p {
+		compatible = "qcom,smp2p";
+		qcom,smem = <443>, <429>;
+
+		interrupts = <0 158 IRQ_TYPE_EDGE_RISING>;
+
+		qcom,ipc = <&apcs 16 10>;
+
+		qcom,local-pid = <0>;
+		qcom,remote-pid = <2>;
+
+		adsp_smp2p_out: master-kernel {
+			qcom,entry-name = "master-kernel";
+			#qcom,state-cells = <1>;
+		};
+
+		adsp_smp2p_in: slave-kernel {
+			qcom,entry-name = "slave-kernel";
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+	};
 };
 #include "msm8996-pins.dtsi"