Enable Ethernet support for Portenta H7. Needs Vision shield

Author: pennam

src/Arduino_ConnectionHandler.h

@@ -43,7 +43,18 @@
   #define WIFI_FIRMWARE_VERSION_REQUIRED WIFI_FIRMWARE_LATEST_VERSION
 #endif
 
-#if defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION)
+#if defined(ARDUINO_PORTENTA_H7_M7)
+  #include <WiFi.h>
+  #include <WiFiUdp.h>
+
+  #define BOARD_HAS_WIFI
+  #define BOARD_HAS_PORTENTA_VISION_SHIELD
+  #define NETWORK_HARDWARE_ERROR WL_NO_SHIELD
+  #define NETWORK_IDLE_STATUS WL_IDLE_STATUS
+  #define NETWORK_CONNECTED WL_CONNECTED
+#endif
+
+#if defined(ARDUINO_NICLA_VISION)
   #include <WiFi.h>
   #include <WiFiUdp.h>
 
@@ -96,6 +107,12 @@
   #define WIFI_FIRMWARE_VERSION_REQUIRED WIFI_FIRMWARE_REQUIRED
 #endif
 
+#if defined(BOARD_HAS_PORTENTA_VISION_SHIELD)
+  #define BOARD_HAS_ETHERNET
+
+  #include <Ethernet.h>
+#endif
+
 /******************************************************************************
    INCLUDES
  ******************************************************************************/