Check for signals in the controller run spin loop.
Check for signals in the controller run spin loop.

Change-Id: Icc63e5353bf38a9633f5a6106515803adeec8ba3
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,sssylvester/geopm,geopm/geopm,geopm/geopm,sssylvester/geopm,cmcantalupo/geopm,sssylvester/geopm,sssylvester/geopm,cmcantalupo/geopm,geopm/geopm