/usr/include/openzwave/platform/ is in libopenzwave1.5-dev 1.5+ds-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/openzwave/platform/Controller.h
/usr/include/openzwave/platform/Event.h
/usr/include/openzwave/platform/FileOps.h
/usr/include/openzwave/platform/HidController.h
/usr/include/openzwave/platform/Log.h
/usr/include/openzwave/platform/Mutex.h
/usr/include/openzwave/platform/Ref.h
/usr/include/openzwave/platform/SerialController.h
/usr/include/openzwave/platform/Stream.h
/usr/include/openzwave/platform/Thread.h
/usr/include/openzwave/platform/TimeStamp.h
/usr/include/openzwave/platform/Wait.h
/usr/include/openzwave/platform/unix/
/usr/include/openzwave/platform/unix/EventImpl.h
/usr/include/openzwave/platform/unix/FileOpsImpl.h
/usr/include/openzwave/platform/unix/LogImpl.h
/usr/include/openzwave/platform/unix/MutexImpl.h
/usr/include/openzwave/platform/unix/SerialControllerImpl.h
/usr/include/openzwave/platform/unix/ThreadImpl.h
/usr/include/openzwave/platform/unix/TimeStampImpl.h
/usr/include/openzwave/platform/unix/WaitImpl.h