ARM: dts: mt2701: enable basic SMP bringup for mt2701

Add enable method to support SMP.
Signed-off-by: Louis Yu <louis.yu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm/boot/dts/mt2701.dtsi

@@ -23,6 +23,7 @@ / {
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
+		enable-method = "mediatek,mt81xx-tz-smp";
 
 		cpu@0 {
 			device_type = "cpu";
@@ -46,6 +47,17 @@ cpu@3 {
 		};
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		trustzone-bootinfo@80002000 {
+			compatible = "mediatek,trustzone-bootinfo";
+			reg = <0 0x80002000 0 0x1000>;
+		};
+	};
+
 	system_clk: dummy13m {
 		compatible = "fixed-clock";
 		clock-frequency = <13000000>;