dt-bindings: timer: exynos4210-mct: Add google,gs101-mct compatible

Add dedicated google,gs101-mct compatible to the dt-schema for
representing mct timer of the Google Tensor gs101 SoC.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20231222165355.1462740-2-peter.griffin@linaro.org