Rename SerialBridge to RS232Bridge

variants/waveshare_rp2040_lora/platformio.ini

@@ -48,12 +48,13 @@ build_flags = ${waveshare_rp2040_lora.build_flags}
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
   -D MAX_NEIGHBOURS=8
-  -D BRIDGE_OVER_SERIAL=Serial2
-  -D BRIDGE_OVER_SERIAL_RX=9
-  -D BRIDGE_OVER_SERIAL_TX=8
+  -D WITH_RS232_BRIDGE=Serial2
+  -D WITH_RS232_BRIDGE_RX=9
+  -D WITH_RS232_BRIDGE_TX=8
   -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${waveshare_rp2040_lora.build_src_filter}
+  +<helpers/bridges/RS232Bridge.cpp>
   +<../examples/simple_repeater>
 
 [env:waveshare_rp2040_lora_room_server]