Be a bit more lenient with the acceptable range for the microsecond
flavor of upm_delay (+/- 150us instead of +/- 100us).
Signed-off-by: Noel Eck <noel.eck@intel.com>
Added Google Test for unit testing. Currently NOT required by UPM
CMake.
* Added a test fixture for the utilities library.
* Fixed bug in delay methods provided by utilities library.
Signed-off-by: Noel Eck <noel.eck@intel.com>