dt-bindings: crypto: fsl,sec-v4.0-mon: Add "power-off-time-sec"

dt-bindings: crypto: fsl,sec-v4.0-mon: Add "power-off-time-sec"

Update to reference the input.yaml schema, thus enabling the use of the
common 'power-off-time' property.

The hardware supports one of four fixed values, and the new property is
optional.

Signed-off-by: Ian Ray <ian.ray@gehealthcare.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250315093455.1100-2-ian.ray@gehealthcare.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>