dt-bindings: arm: Fix cpu compatibles in the hierarchical example for PSCI

Fixes: a3f048b5424e ("dt: psci: Update DT bindings to support hierarchical PSCI states")
Signed-off-by: Ulf Hansson <[e-mail]>
Signed-off-by: Rob Herring <[e-mail]>

Documentation/devicetree/bindings/arm/psci.yaml

···
 
       CPU0: cpu@0 {
         device_type = "cpu";
-        compatible = "arm,cortex-a53", "arm,armv8";
+        compatible = "arm,cortex-a53";
         reg = <0x0>;
         enable-method = "psci";
         power-domains = <&CPU_PD0>;
···
 
       CPU1: cpu@1 {
         device_type = "cpu";
-        compatible = "arm,cortex-a57", "arm,armv8";
+        compatible = "arm,cortex-a53";
         reg = <0x100>;
         enable-method = "psci";
         power-domains = <&CPU_PD1>;