```
./bsp/cvitek/drivers/drv_wdt.c: In function '_wdt_control':
warning: assignment to 'void *' from 'unsigned int' makes pointer
from integer without a cast [-Wint-conversion]
119 | wdt_device->parent.user_data = (rt_uint32_t)(*(rt_uint32_t *)arg);
| ^
warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
122 | *(rt_uint32_t *)arg = (rt_uint32_t)wdt_device->parent.user_data;
| ^
```
Rootcasue: It's not portable to store integar in a pointer.
Solution: use global _wdt_dev to store the timeout value.
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
2d5eb2669f