In busybox, the mktemp requires that the generated filename be
suffixed with at least six consecutive 'X' characters. Otherwise,
it will return an "Invalid argument" error.
Signed-off-by: Hui Min Mina Chou <minachou@andestech.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>