driver: watchdog: Remove mtk_wdt_stop() in probe() to prevent the system freeze and it doesn't reboot by watchdog problem

[Guenter Roeck]

On 12/24/20 11:30 PM, Freddy Hsin wrote:
> Before user space daemon start to access the watchdog device,
> there is a time interval that watchdog is disabled in the
> original flow. If the system freezing at this interval, it
> cannot be rebooted by watchdog hardware automatically.
> 
> In order to solve this problem, the watchdog hardware should be
> kept working, and start hrtimer in framework to ping it by
> setting max_hw_heartbeat_ms and HW_RUNNING used in
> watchdog_need_worker to determine whether the worker should be
> started or not
> 
This intro email is unnecessary.

Guenter