This is xnu-11215.1.10. See this file in: 
module Darwin.device [system] {
  header "device/device_types.h"
  #ifdef XNU_KERNEL_PRIVATE
  // device_port.h is in the public SDK for macOS, but
  // mastered out of the public SDK for the other OSes.
  #endif
  #ifdef XNU_PLATFORM_MacOSX
  header "device/device_port.h"
  #endif

  export *
}