Bug#935733: libbladerf-doc: fails to upgrade from 'sid' - trying to overwrite /usr/share/doc/libbladerf-dev/CONTRIBUTORS

[A. Maitland Bottoms]

I got surprised by the result that adding a file to
debian/libbladerf-doc.docs resulted in a file being unpacked to
/usr/share/doc/libbladerf-dev/

Upload with Breaks:/Replaces: coming soon.
-Maitland