File _link of Package dtc

<link project="SUSE:SLE-15-SP2:Update" cicount="add" baserev="0b1f946580bd1eae2f5bc4209f723d04">
  <patches>
    <topadd>BuildRequires: python-rpm-macros</topadd>
    <apply name="project.diff"/>
  </patches>
</link>