dt-bindings: watchdog: Document Qualcomm QCS8300

Add devicetree binding for watchdog present on Qualcomm
QCS8300 SoC.

Signed-off-by: Xin Liu <quic_liuxin@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Link: https://lore.kernel.org/r/20241029031222.1653123-2-quic_liuxin@quicinc.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>