fixup! arm64: dts: apple: t600x: Add t6000 dispext device nodes

Discovered by https://github.com/girona1975 in [1]

Link: #303 (comment) [1]
Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi

@@ -483,10 +483,11 @@
 /*
  * ps_atc3_usb_aon power-domain is always-on to keep dwc3 working over suspend.
  * atc3 is used exclusively for the DP-to-HDMI so do not keep this always on.
+ * On t600x it is required to keep atc DP state over suspend.
  */
-&ps_atc3_usb_aon {
-	/delete-property/ apple,always-on;
-};
+// &ps_atc3_usb_aon {
+// 	/delete-property/ apple,always-on;
+// };
 
 /* ATC3 is used for DisplayPort -> HDMI only */
 &dwc3_3_dart_0 {