Fix build if watchdog network feed is not available

Author: pennam

src/utility/watchdog/Watchdog.cpp

@@ -66,10 +66,12 @@ static void samd_watchdog_reset()
   }
 }
 
+#if defined (WIFI_HAS_FEED_WATCHDOG_FUNC)
 static void samd_watchdog_enable_network_feed()
 {
   WiFi.setFeedWatchdogFunc(watchdog_reset);
 }
+#endif
 
 /* This function is called within the WiFiNINA library when invoking
  * the method 'connectBearSSL' in order to prevent a premature bite
@@ -122,6 +124,7 @@ static void mbed_watchdog_reset()
   }
 }
 
+#if defined (ARDUINO_PORTENTA_H7_WIFI_HAS_FEED_WATCHDOG_FUNC)
 static void mbed_watchdog_enable_network_feed(const bool use_ethernet)
 {
   if(use_ethernet) {
@@ -132,6 +135,7 @@ static void mbed_watchdog_enable_network_feed(const bool use_ethernet)
     WiFi.setFeedWatchdogFunc(watchdog_reset);
   }
 }
+#endif
 
 void mbed_watchdog_trigger_reset()
 {
@@ -174,6 +178,7 @@ void watchdog_reset()
 #endif
 }
 
+#if defined (WIFI_HAS_FEED_WATCHDOG_FUNC) || defined (ARDUINO_PORTENTA_H7_WIFI_HAS_FEED_WATCHDOG_FUNC)
 void watchdog_enable_network_feed(const bool use_ethernet)
 {
 #ifdef ARDUINO_ARCH_SAMD
@@ -182,4 +187,5 @@ void watchdog_enable_network_feed(const bool use_ethernet)
   mbed_watchdog_enable_network_feed(use_ethernet);
 #endif
 }
+#endif
 #endif /* (ARDUINO_ARCH_SAMD) || (ARDUINO_ARCH_MBED) */