dt-bindings: timer: convert timer/amlogic,meson6-timer.txt to dt-schema

Convert the Amlogic Meson6 SoCs Timer Controller bindings to dt-schema.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20221117-b4-amlogic-bindings-convert-v5-1-63781bed4452@linaro.org


Signed-off-by: Rob Herring <robh@kernel.org>