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 <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Sam Protsenko <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml

···
       - items:
           - enum:
               - axis,artpec8-mct
+              - google,gs101-mct
               - samsung,exynos3250-mct
               - samsung,exynos5250-mct
               - samsung,exynos5260-mct
···
           contains:
             enum:
               - axis,artpec8-mct
+              - google,gs101-mct
               - samsung,exynos5260-mct
               - samsung,exynos5420-mct
               - samsung,exynos5433-mct