dts: xilinx: add dtsi files for both r5f cores

Xilinx ZynqMP platform has cortex-r5 cluster which can be
configured in lockstep or split mode. In lockstep mode
only one core is available where as in split mode two cores
can run independently in AMP mode. Introduce dtsi files for
RPU core0 and core1 to include separtely in case application
is being built for Asynchronous MultiProcessing use.

Signed-off-by: Tanmay Shah <[email protected]>

dts/arm/xilinx/zynqmp_rpu.dtsi

@@ -21,6 +21,13 @@
 			reg = <0>;
 		};
 
+		cpu1: cpu@1 {
+			status = "disabled";
+			device_type = "cpu";
+			compatible = "arm,cortex-r5f";
+			reg = <0>;
+		};
+
 		cpu1: cpu@1 {
 			status = "disabled";
 			device_type = "cpu";