dt-bindings: clock: imx8m: Add missing interrupt property

All i.MX8M SoC have 2 CCM interrupts, called:
* Interrupt Request 1
* Interrupt Request 2

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20230510065644.1317577-1-alexander.stein@ew.tq-group.com


Signed-off-by: Abel Vesa <abel.vesa@linaro.org>