dt-bindings: rtc: sun6i: no clock-output-names on h616/r329

On h616 and r329 chips, clock output names are never defined through DT and
are not meant to be. Just disallow the property for those chips.

Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: http://lore.kernel.org/r/20260629125305.0DF981F000E9@smtp.kernel.org
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Chen-Yu Tsai <wens@kernel.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://patch.msgid.link/20260706-a733-rtc-v4-1-f330728db3d3@baylibre.com
Signed-off-by: Chen-Yu Tsai <wens@kernel.org>

Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml

@@ -175,6 +175,18 @@ allOf:
         interrupts:
           minItems: 2
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - allwinner,sun50i-h616-rtc
+              - allwinner,sun50i-r329-rtc
+
+    then:
+      properties:
+        clock-output-names: false
+
 required:
   - "#clock-cells"
   - compatible