arm64: zynqmp: Rename ams_ps/pl node names

Fix child node names to be aligned with dt-binding available in the Linux
kernel which requires names as ams-ps@ and ams-pl@.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/8f1451d614f654cb0d0da1e799e876c078fbf2c9.1688992653.git.michal.simek@amd.com
diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi
index 299ad1e..6228149 100644
--- a/arch/arm/dts/zynqmp.dtsi
+++ b/arch/arm/dts/zynqmp.dtsi
@@ -960,13 +960,13 @@
 			#io-channel-cells = <1>;
 			ranges = <0 0 0xffa50800 0x800>;
 
-			ams_ps: ams_ps@0 {
+			ams_ps: ams-ps@0 {
 				compatible = "xlnx,zynqmp-ams-ps";
 				status = "disabled";
 				reg = <0x0 0x400>;
 			};
 
-			ams_pl: ams_pl@400 {
+			ams_pl: ams-pl@400 {
 				compatible = "xlnx,zynqmp-ams-pl";
 				status = "disabled";
 				reg = <0x400 0x400>;