/usr/share/doc/beignet-opencl-icd-dbg/changelog.Debian.gz is in beignet-opencl-icd-dbg 1.1.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/beignet-opencl-icd-dbg/../beignet-opencl-icd/changelog.Debian.gz