File _link of Package v4l2loopback.openSUSE_Leap_15.4_Update

<link project="openSUSE:Leap:15.4:Update" package="v4l2loopback" rev="b3766670292df37e71f38f316aa89ad8" vrev="3.4" baserev="b3766670292df37e71f38f316aa89ad8">
  <patches>
    <branch></branch>
  </patches>
</link>