m7att: remove call to nonexistent overlay

Change-Id: I171da3d7bf94267c4199a5313162ecc493b0760c
m7att: shift to common m7 tree

Change-Id: I950e5c76116c14ee63ec786d160b85d17886f678
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0