dt-bindings: timer: mediatek,mtk-timer: add MT8365

Add binding description for mediatek,mt8365-systimer

Signed-off-by: Bernhard Rosenkränzer <bero@baylibre.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230125143503.1015424-8-bero@baylibre.com


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