watchdog: ulp_wdog: Use driver model for reset_cpu()

Replace hardcoded WDOG_BASE_ADDR with driver model based dynamic address
lookup from device tree, allowing reset_cpu() to dynamically locate
watchdog devices from device tree.

This change also enables CONFIG_WDT for relevant boards and ensures the
watchdog nodes are available for driver model usage.

- Remove hardcoded WDOG_BASE_ADDR from hw_watchdog_* functions
- Reimplement reset_cpu() using UCLASS_WDT device iteration
- Add ulp_wdt_expire_now() callback for standard WDT interface
- Pass wdog register pointer to hw_watchdog_set_timeout()
- Enable CONFIG_WDT for boards using ULP watchdog
- Remove wdog3 status = "disabled" overrides from U-Boot device tree
  overlays, as the watchdog device needs to be accessible for driver
  model based reset functionality.

Signed-off-by: Alice Guo <[email protected]>
Acked-by: Francesco Dolcini <[email protected]> # Toradex boards
Reviewed-by: Peng Fan <[email protected]>

0 files changed, 0 insertions, 0 deletions