filelock: rename some fields in tracepoints

In later patches we're going to introduce some macros with names that
clash with fields here. To prevent problems building, just rename the
fields in the trace entry structures.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-2-c6129007ee8d@kernel.org


Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>