ARM: dts: msm: Add smp2p devices for msm8937

Add SMP2P sleepstate device support for msm8937 to ADSP

Change-Id: I1d4a7adbd2027612d3f17863d94e4d229dee53e9
Signed-off-by: Shaoxing <shaoxing@codeaurora.org>

arch/arm64/boot/dts/qcom/msm8937-smp2p.dtsi

@@ -158,6 +158,21 @@ qcom,smp2pgpio_test_smp2p_2_out {
 		gpios = <&smp2pgpio_smp2p_2_out 0 0>;
 	};
 
+	smp2pgpio_sleepstate_2_out: qcom,smp2pgpio-sleepstate-gpio-2-out {
+		compatible = "qcom,smp2pgpio";
+		qcom,entry-name = "sleepstate";
+		qcom,remote-pid = <2>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
+
+	qcom,smp2pgpio-sleepstate-2-out {
+		compatible = "qcom,smp2pgpio-sleepstate-out";
+		gpios = <&smp2pgpio_sleepstate_2_out 0 0>;
+	};
+
 	/* ssr - inbound entry from mss. */
 	smp2pgpio_ssr_smp2p_1_in: qcom,smp2pgpio-ssr-smp2p-1-in {
 		compatible = "qcom,smp2pgpio";