dt-bindings: timer: exynos4210-mct: add samsung,exynos2200-mct-peris compatible

Whilst having a new multicore timer that differs from the old designs in
functionality and registers (marked as MCTv2 in vendor kernels),
Exynos2200 also keeps an additional multicore timer connected over PERIS
that reuses the same design as older exynos socs.

Add a compatible for the legacy multicore timer of Exynos2200. Rather
than differentiating it based on the block version, mark it as the
one connected over PERIS.

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

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

···
           - enum:
               - axis,artpec8-mct
               - google,gs101-mct
+              - samsung,exynos2200-mct-peris
               - samsung,exynos3250-mct
               - samsung,exynos5250-mct
               - samsung,exynos5260-mct
···
             enum:
               - axis,artpec8-mct
               - google,gs101-mct
+              - samsung,exynos2200-mct-peris
               - samsung,exynos5260-mct
               - samsung,exynos5420-mct
               - samsung,exynos5433-mct