Release the IRQ resource on detach. This fixes repeatedly loading and unloading the hme(4) module in case it attaches to sbus(4).
Release the IRQ resource on detach. This fixes repeatedly loading and
unloading the hme(4) module in case it attaches to sbus(4).

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