If filter of the interrupt event is not null, print it, in addition to the handler address.  Add a mark to distinguish between filter and handler.
If filter of the interrupt event is not null, print it, in addition to
the handler address.  Add a mark to distinguish between filter and
handler.

Note that the arguments for both filter and handler are same.

Sponsored by:	The FreeBSD Foundation
Reviewed by:	jhb
MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase