msm8660: disable ondemand governor

  * The ondemand governor is broken. If enabled, the result is kernel
    panic after a short time.
  * This is obviously not a real solution, but it does protect users
    from enabling a feature that results in a crash.

Change-Id: I0db5f1b036ce0e00f594974a91f7db230a33ba4c
Merge remote-tracking branch 'msm8660/cm-11.0' into cm-11.0-wip