dt-bindings: timer: Tegra: Convert text bindings to yaml

Convert Tegra timer binding into yaml format.

This commit also merge 3 text bindings with almost
identical content (differens in number of registers).

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20220303233307.61753-1-david@ixit.cz


Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>