smr: Introduce an id and prefix all log messages with SMR(ID)

When OpenBSC is handling more than one message at a time it is difficult
to see which log message belongs to which SMR instance. Introduce a
uint64_t id that can be set to the row_id/message_id and prefix all
log messages with SMR(ID).

This change is ABI and API incompatible with previous versions of
libosmogsm.
2 files changed