fix altitude for telemetry, instead of using zero

variants/t114/target.cpp

@@ -111,7 +111,7 @@ bool T114SensorManager::begin() {
 
 bool T114SensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
   if (requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
-    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, 0.0f);
+    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
   }
   return true;
 }
@@ -125,6 +125,7 @@ void T114SensorManager::loop() {
     if (_location->isValid()) {
       node_lat = ((double)_location->getLatitude())/1000000.;
       node_lon = ((double)_location->getLongitude())/1000000.;
+      node_altitude = ((double)_location->getAltitude()) / 1000.0;
       MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
     }
     next_gps_update = millis() + 1000;