dt-bindings: watchdog: arm,sp805: drop unneeded minItems

There is no need to specify minItems when they are equal to maxItems,
because it is implied by maxItems.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230415095112.51257-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: krzk

Documentation/devicetree/bindings/watchdog/arm,sp805.yaml

@@ -43,7 +43,6 @@ properties:
       Clocks driving the watchdog timer hardware. The first clock is used
       for the actual watchdog counter. The second clock drives the register
       interface.
-    minItems: 2
     maxItems: 2
 
   clock-names: