arm64: dts: exynos990: Add CMU_PERIS and MCT nodes

arm64: dts: exynos990: Add CMU_PERIS and MCT nodes

CMU_PERIS is a new clock controller that clocks the MCT. The MCT has 9
timers (1x count-up global timer, 8x count-down CPU local).
The global timer generates 4 interrupts, and each local timer
generates one interrupt. So, in total 12 interrupts.

Signed-off-by: Igor Belwon <igor.belwon@mentallysanemainliners.org>
Link: https://lore.kernel.org/r/20250104-cmu-nodes-v1-2-ae8af253bc25@mentallysanemainliners.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>