params put in locationd async (#20713)

* params put in locationd async

* remove reference in thread call
old-commit-hash: ed8acfa284

selfdrive/locationd/locationd.cc

@@ -365,7 +365,10 @@ int Localizer::locationd_thread() {
         VectorXd posGeo = this->get_position_geodetic();
         std::string lastGPSPosJSON = util::string_format(
           "{\"latitude\": %.15f, \"longitude\": %.15f, \"altitude\": %.15f}", posGeo(0), posGeo(1), posGeo(2));
-        params.put("LastGPSPosition", lastGPSPosJSON);  // TODO write async
+
+        std::thread([&params] (const std::string gpsjson) {
+          params.put("LastGPSPosition", gpsjson);
+        }, lastGPSPosJSON).detach();
       }
     }
   }