Variables starting with `o' in iokit/IOKit/firewire

• offset iokit/IOKit/firewire/IOFWAddressSpace.h:73
• opcode iokit/IOKit/firewire/IOFWIsoch.h:137
• OSData iokit/IOKit/firewire/IOFireWireController.h:46
• OSSet iokit/IOKit/firewire/IOFWIsochChannel.h:46