If no AC line devices are found, go ahead and notify devd that the system is on AC power (i.e. not a laptop).  This allows power_profile to run once for desktop systems as well, for instance, to set C3 or CPU frequency.
If no AC line devices are found, go ahead and notify devd that the system
is on AC power (i.e. not a laptop).  This allows power_profile to run once
for desktop systems as well, for instance, to set C3 or CPU frequency.

MFC after:	2 weeks

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