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 '000ea68ba9c094b2d673e530a885ffe7ab516d41':
  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