root: add mpdecision to system group

Change-Id: I92770a54b9376a70dbcde88c8679793ffebabd37
Revert "Fix speakerphone: Device doesn't use fluence"

This reverts commit 5c4330843036ae891070eb6979e2e6ba85af8e9e.

Change-Id: Ic1a001ae511509f0afe88530d53e7df70c36e058
Use msm8960dt_mmi_defconfig

Change-Id: I9eb39c438c4f31c311db4d575fa7b28d440a0681