build: Add logfile to add TaskBase events

We add the path to the logfile for all Task events except TaskInvalid
so that we can trace back the logfile locations at some future point.

TaskInvalid doesn't ever have a logfile.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
runqueue: add runQueueTaskSkipped event

Adding a runQueueTaskSkipped to notify that the tasks that are not
run either because they are set-scened or they don't need an update
(timestamp was ok).

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>