arm64: dts: imx8: align thermal node names with bindings

Bindings expect thermal node names to end with '-thermal':

  imx8qxp-mek.dtb: thermal-zones: 'pmic-thermal0' does not match any of the regexes: '^[a-zA-Z][a-zA-Z0-9\\-]{1,12}-thermal$', 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8dxl-evk.dts

@@ -276,7 +276,7 @@ &lsio_gpio5 {
 };
 
 &thermal_zones {
-	pmic-thermal0 {
+	pmic-thermal {
 		polling-delay-passive = <250>;
 		polling-delay = <2000>;
 		thermal-sensors = <&tsens IMX_SC_R_PMIC_0>;

arch/arm64/boot/dts/freescale/imx8dxl.dtsi

@@ -188,7 +188,7 @@ timer {
 	};
 
 	thermal_zones: thermal-zones {
-		cpu-thermal0 {
+		cpu-thermal {
 			polling-delay-passive = <250>;
 			polling-delay = <2000>;
 			thermal-sensors = <&tsens IMX_SC_R_SYSTEM>;

arch/arm64/boot/dts/freescale/imx8qxp-mek.dts

@@ -148,7 +148,7 @@ &scu_key {
 };
 
 &thermal_zones {
-	pmic-thermal0 {
+	pmic-thermal {
 		polling-delay-passive = <250>;
 		polling-delay = <2000>;
 		thermal-sensors = <&tsens IMX_SC_R_PMIC_0>;