firewire: core: add tracepoints events for completions of packets in isochronous context

It is helpful to trace completion of packets in isochronous context when
the core function is requested them by both in-kernel units driver and
userspace applications.

This commit adds some tracepoints events for the aim.

Link: https://lore.kernel.org/r/20240623220859.851685-8-o-takashi@sakamocchi.jp


Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>