m7tmo: Add setup-makefiles.sh convenience script

Change-Id: Ie5bac4d9e6f31a048a32d15113780ee3d88a25c8
m7tmo: remove call to nonexistent overlay

Change-Id: If83514d5b718824bcd64b62f12ea2af851b8453e
m7tmo: shift to common m7 tree

Change-Id: I66d40073591de6910823fedb49544ca9a93a22ed