m7-common: add libCB

Change-Id: I7556d536c92fc9741ffc839930db116581a6769c
m7-common: Don't allow insecure allocations from MM heap

* Userspace is OK with this and will redirect to the IOMMU.
  This will allow us to switch the MM heap to CMA and reclaim
  the space when not being used.

Change-Id: I25abcd0e22cc63e5751c85f4b1c4d2c389fb2783
m7-common: Add extended extractor to proprietary file list

Change-Id: I5db34a83ed39f29b19a1be1ab2e5c48ce64db3ad