BluetoothSerial: Fix SPP service mode (#8806)

Author: lucasssvaz

Diff for: libraries/BluetoothSerial/src/BluetoothSerial.cpp

@@ -257,10 +257,8 @@ static void esp_spp_cb(esp_spp_cb_event_t event, esp_spp_cb_param_t *param)
 #else
         esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
 #endif
-        if (!_isMaster) {
-            log_i("ESP_SPP_INIT_EVT: slave: start");
-            esp_spp_start_srv(ESP_SPP_SEC_NONE, ESP_SPP_ROLE_SLAVE, 0, _spp_server_name);
-        }
+        log_i("ESP_SPP_INIT_EVT: %s: start", _isMaster ? "master" : "slave");
+        esp_spp_start_srv(ESP_SPP_SEC_NONE, _isMaster ? ESP_SPP_ROLE_MASTER : ESP_SPP_ROLE_SLAVE, 0, _spp_server_name);
         xEventGroupSetBits(_spp_event_group, SPP_RUNNING);
         break;