99base: enable initqueue if extra devices are added

When extra devices are added, initqueue should be enabled to make sure
those devices are present, so following services and routines could
use those devices.

See PR #442 for more detail.

modules.d/99base/module-setup.sh

@@ -94,6 +94,9 @@ install() {
 
     ## save host_devs which we need bring up
     if [[ $hostonly_cmdline == "yes" ]]; then
+        if [[ -n $add_device ]]; then
+            dracut_need_initqueue
+        fi
         if [[ -f "$initdir/lib/dracut/need-initqueue" ]] || ! dracut_module_included "systemd"; then
             (
                 if dracut_module_included "systemd"; then