dts: T4240: Add ESPI DT nodes

Add ESPI controller DT node for T4240.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/powerpc/dts/t4240.dtsi b/arch/powerpc/dts/t4240.dtsi
index 9b5902f..498da4f 100644
--- a/arch/powerpc/dts/t4240.dtsi
+++ b/arch/powerpc/dts/t4240.dtsi
@@ -99,6 +99,15 @@
 			clock-frequency = <0x0>;
 		};
 
+		espi0: spi@110000 {
+			compatible = "fsl,mpc8536-espi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x110000 0x1000>;
+			fsl,espi-num-chipselects = <4>;
+			status = "disabled";
+		};
+
 		usb@210000 {
 			compatible = "fsl-usb2-mph";
 			reg = <0x210000 0x1000>;