ARM: dts: rockchip: add optee node

Add optee node to supply OP-TEE required properties
for Android products which need OP-TEE enable default.

/optee node is supposed to be below /firmware node.

Change-Id: Ie0e483e02336def9feba47bbfbebdd8d8693d480
Signed-off-by: Elon Zhang <zhangzj@rock-chips.com>

arch/arm/boot/dts/rk322x-android.dtsi

@@ -61,6 +61,11 @@
 
 	firmware {
 		firmware_android: android {};
+
+		optee: optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
 	};
 
 	reserved-memory {

arch/arm/boot/dts/rk3288-android.dtsi

@@ -145,6 +145,13 @@
 		pinctrl-0 = <&uart2_xfer>;
 	};
 
+	firmware {
+		optee: optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
+
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";