Typedefs starting with `o' in iokit/IOKit/ndrvsupport

• OSErr iokit/IOKit/ndrvsupport/IOMacOSTypes.h:132
• OSType iokit/IOKit/ndrvsupport/IOMacOSTypes.h:136
• OSTypePtr iokit/IOKit/ndrvsupport/IOMacOSTypes.h:140