dt-bindings: timer: nuvoton,npcm7xx-timer: Allow specifying all clocks

The timer module contains multiple timers. In the WPCM450 SoC, each timer
runs off a clock can be gated individually. To model this correctly, the
timer node in the devicetree needs to take multiple clock inputs.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20221104161850.2889894-2-j.neuschaefer@gmx.net
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>

Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.yaml

@@ -25,7 +25,13 @@ properties:
       - description: The timer interrupt of timer 0
 
   clocks:
-    maxItems: 1
+    items:
+      - description: The reference clock for timer 0
+      - description: The reference clock for timer 1
+      - description: The reference clock for timer 2
+      - description: The reference clock for timer 3
+      - description: The reference clock for timer 4
+    minItems: 1
 
 required:
   - compatible