ARM: dts: msm: Add firmware node and scm node

Add firmware node and scm node for Sun SoC.

Change-Id: I6f0c48638053ef07ac1fa393b1ff9b76478ed182
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

qcom/sun.dtsi

@@ -22,6 +22,8 @@
 
 	aliases { };
 
+	firmware: firmware { };
+
 	cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
@@ -150,6 +152,12 @@
 	soc: soc { };
 };
 
+&firmware {
+	qcom-scm {
+		compatible = "qcom,scm";
+	};
+};
+
 &soc {
 	#address-cells = <1>;
 	#size-cells = <1>;