Move include of <machine/ipl.h> inside ifndef SMP where it is used, to avoid getting 'unused include file' warnings in the SMP case.
Move include of <machine/ipl.h> inside ifndef SMP where it is used, to
avoid getting 'unused include file' warnings in the SMP case.

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