fsm: add LOGPFSML to pass explicit logging level

Provide one central LOGPFSML to print FSM information, take the FSM logging
subsystem from the FSM instance but use an explicitly provided log level
instead of the FSM's default level.

Use to replace some, essentially, duplications of the LOGPFSM macro.

In effect, the fsm_test's expected error changes, since the previous code dup
for logging events used round braces to indicate the fi's state, while the
central macro uses curly braces.

Change-Id: If295fdabb3f31a0fd9490d1e0df57794c75ae547
3 files changed