Fix NANO_RP2040 maximum watchdog timeout. WD register load value gets saturated to 16777215

Author: pennam

src/ArduinoIoTCloudTCP.cpp

@@ -321,7 +321,7 @@ void ArduinoIoTCloudTCP::update()
   _state = next_state;
 
   /* This watchdog feed is actually needed only by the RP2040 CONNECT cause its
-   * maximum watchdog window is 8388ms; despite this we feed it for all 
+   * maximum watchdog window is 8389ms; despite this we feed it for all 
    * supported ARCH to keep code aligned.
    */
 #ifdef ARDUINO_ARCH_SAMD

src/utility/watchdog/Watchdog.cpp

@@ -35,7 +35,7 @@
 #ifdef ARDUINO_ARCH_MBED
 #  include <watchdog_api.h>
 #  define PORTENTA_H7_WATCHDOG_MAX_TIMEOUT_ms (32760)
-#  define NANO_RP2040_WATCHDOG_MAX_TIMEOUT_ms (32760)
+#  define NANO_RP2040_WATCHDOG_MAX_TIMEOUT_ms (8389)
 #endif /* ARDUINO_ARCH_MBED */
 
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