GPS for STM32WL (#7297)

* Enable GPS for Wio-E5 variant on Serial2

* Add ability to override GPS serial port using GPS_SERIAL_PORT, and make RAK2560 use it.

* Don't try to send ATAK packets if ATAK is disabled, +4k flash

src/modules/PositionModule.cpp

@@ -266,9 +266,11 @@ meshtastic_MeshPacket *PositionModule::allocPositionPacket()
 
     LOG_INFO("Position packet: time=%i lat=%i lon=%i", p.time, p.latitude_i, p.longitude_i);
 
+#ifndef MESHTASTIC_EXCLUDE_ATAK
     // TAK Tracker devices should send their position in a TAK packet over the ATAK port
     if (config.device.role == meshtastic_Config_DeviceConfig_Role_TAK_TRACKER)
         return allocAtakPli();
+#endif
 
     return allocDataProtobuf(p);
 }