webrepl: Support LAN as well as WLAN boards.

When webrepl starts, it prints out the IP address, however it does
this by querying the network.WLAN object.
This fail for board with an Ethernet interface but no WiFi interface.
We try both type of interface (and print error if none exist).

Signed-off-by: Romaric-RILLET <romaric.rillet@gmail.com>

micropython/net/webrepl/webrepl.py

@@ -102,10 +102,25 @@ def setup_conn(port, accept_handler):
     listen_s.listen(1)
     if accept_handler:
         listen_s.setsockopt(socket.SOL_SOCKET, 20, accept_handler)
+    started = False
     for i in (network.WLAN.IF_AP, network.WLAN.IF_STA):
-        iface = network.WLAN(i)
-        if iface.active():
-            print("WebREPL server started on http://%s:%d/" % (iface.ifconfig()[0], port))
+        try:
+            iface = network.WLAN(i)
+            if iface.active():
+                print("WebREPL server started on http://%s:%d/" % (iface.ifconfig()[0], port))
+                started = True
+        except AttributeError:
+            pass
+    for i in (0, 1):
+        try:
+            iface = network.LAN(i)
+            if iface.active():
+                print("WebREPL server started on http://%s:%d/" % (iface.ifconfig()[0], port))
+                started = True
+        except (AttributeError, ValueError):
+            pass
+    if not started:
+        print("WebREPL no active interface")
     return listen_s