arm64: dts: fsd: Add the MCT support

Add node relevant to support MCT, which is used as
one of the system timer on this SoC.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220223171858.11384-1-alim.akhtar@samsung.com
Link: https://lore.kernel.org/r/20220316154309.436028-2-krzysztof.kozlowski@canonical.com

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>