/usr/include/uhd/usrp/ is in libuhd-dev 3.10.3.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/uhd/usrp/dboard_base.hpp
/usr/include/uhd/usrp/dboard_eeprom.h
/usr/include/uhd/usrp/dboard_eeprom.hpp
/usr/include/uhd/usrp/dboard_id.hpp
/usr/include/uhd/usrp/dboard_iface.hpp
/usr/include/uhd/usrp/dboard_manager.hpp
/usr/include/uhd/usrp/fe_connection.hpp
/usr/include/uhd/usrp/gpio_defs.hpp
/usr/include/uhd/usrp/gps_ctrl.hpp
/usr/include/uhd/usrp/mboard_eeprom.h
/usr/include/uhd/usrp/mboard_eeprom.hpp
/usr/include/uhd/usrp/multi_usrp.hpp
/usr/include/uhd/usrp/subdev_spec.h
/usr/include/uhd/usrp/subdev_spec.hpp
/usr/include/uhd/usrp/usrp.h
/usr/include/uhd/usrp_clock/multi_usrp_clock.hpp
/usr/include/uhd/usrp_clock/octoclock_eeprom.hpp
/usr/include/uhd/usrp_clock/usrp_clock.h