am 2f1a987c: am 000ea68b: Merge "change LinearityTest algorithm to use RMS of the whole signal and use linear regression to fit the result volume level is fixed to 2/3 of max" into ics-mr1

* commit '2f1a987c918a43e79c3fc5e5231f5b948807223b':
  change LinearityTest algorithm to use RMS of the whole signal and use linear regression to fit the result volume level is fixed to 2/3 of max