dt-bindings: serial: rs485: Fix rs485-rts-delay property

commit 12b3642b6c upstream.

Code expects array only with 2 items which should be checked.
But also item checking is not working as it should likely because of
incorrect items description.

Fixes: d50f974c4f ("dt-bindings: serial: Convert rs485 bindings to json-schema")
Signed-off-by: Michal Simek <michal.simek@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/820c639b9e22fe037730ed44d1b044cdb6d28b75.1726480384.git.michal.simek@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/serial/rs485.yaml

@@ -18,16 +18,15 @@ properties:
     description: prop-encoded-array <a b>
     $ref: /schemas/types.yaml#/definitions/uint32-array
     items:
-      items:
-        - description: Delay between rts signal and beginning of data sent in
-            milliseconds. It corresponds to the delay before sending data.
-          default: 0
-          maximum: 100
-        - description: Delay between end of data sent and rts signal in milliseconds.
-            It corresponds to the delay after sending data and actual release
-            of the line.
-          default: 0
-          maximum: 100
+      - description: Delay between rts signal and beginning of data sent in
+          milliseconds. It corresponds to the delay before sending data.
+        default: 0
+        maximum: 100
+      - description: Delay between end of data sent and rts signal in milliseconds.
+          It corresponds to the delay after sending data and actual release
+          of the line.
+        default: 0
+        maximum: 100
 
   rs485-rts-active-low:
     description: drive RTS low when sending (default is high).