FireWire: clean up core-iso.c kernel-doc

FireWire: clean up core-iso.c kernel-doc

Clean up kernel-doc warnings in <drivers/firewire/core-iso.c> so that
it can be added to a Firewire/IEEE 1394 driver-api chapter
without adding lots of noisy warnings to the documentation build.

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Stefan Richter <[email protected]>
Cc: Takashi Sakamoto <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Randy Dunlap <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: "Martin K. Petersen" <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>