arm64: dts: ls1028a: add one more thermal zone support

There are 2 thermal zones in ls1028a soc. Current dts only
includes one. This patch adds the other thermal zone node
in dts to enable it.
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi

@@ -129,11 +129,31 @@ its: gic-its@6020000 {
 	};
 
 	thermal-zones {
-		core-cluster {
+		ddr-controller {
 			polling-delay-passive = <1000>;
 			polling-delay = <5000>;
 			thermal-sensors = <&tmu 0>;
 
+			trips {
+				ddr-ctrler-alert {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				ddr-ctrler-crit {
+					temperature = <95000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+
+		core-cluster {
+			polling-delay-passive = <1000>;
+			polling-delay = <5000>;
+			thermal-sensors = <&tmu 1>;
+
 			trips {
 				core_cluster_alert: core-cluster-alert {
 					temperature = <85000>;