/usr/lib/x86_64-linux-gnu/beignet/include/ is in beignet-opencl-icd 1.1.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/beignet/include/ocl.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_as.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_async.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_atom.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_common.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_convert.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_defines.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_float.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_geometric.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_image.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_integer.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_math.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_memcpy.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_memset.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_misc.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_printf.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_relational.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_simd.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_sync.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_types.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_vload.h
/usr/lib/x86_64-linux-gnu/beignet/include/ocl_workitem.h