arm: dts: imx8mp: move firmware/optee node to common imx8mp-u-boot.dtsi

Move the firmware/optee node to the common imx8mp-u-boot.dtsi and
protect it with an ifdef CONFIG_OPTEE as it is a meaningless node
without the optee driver enabled.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>

arch/arm/dts/imx8mp-beacon-kit-u-boot.dtsi

@@ -11,13 +11,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &{/soc@0/bus@30800000/i2c@30a20000/pmic@25} {

arch/arm/dts/imx8mp-evk-u-boot.dtsi

@@ -11,12 +11,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &reg_usdhc2_vmmc {

arch/arm/dts/imx8mp-icore-mx8mp-edimm2.2-u-boot.dtsi

@@ -12,13 +12,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &reg_usdhc2_vmmc {

arch/arm/dts/imx8mp-rsb3720-a1-u-boot.dtsi

@@ -12,13 +12,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &iomuxc {

arch/arm/dts/imx8mp-u-boot.dtsi

@@ -8,6 +8,15 @@
 	binman: binman {
 		multiple-images;
 	};
+
+#ifdef CONFIG_OPTEE
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
+#endif
 };
 
 &soc {

arch/arm/dts/imx8mp-venice-gw74xx-u-boot.dtsi

@@ -6,13 +6,6 @@
 #include "imx8mp-u-boot.dtsi"
 
 / {
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
-
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		bootph-pre-ram;

arch/arm/dts/imx8mp-verdin-wifi-dev-u-boot.dtsi

@@ -6,13 +6,6 @@
 #include "imx8mp-u-boot.dtsi"
 
 / {
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
-
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		bootph-pre-ram;