Add Widevine proprietary libs

Change-Id: I176ded8c95d6739ec23e868bbcd81791f619e5f4
Fix setup-makefiles for find7u

Change-Id: Iad3f5683b81ed6c5854ca52f1e1aff888124fb43
Add proximity wake flag

Use frameworks opt-in functionality.

Depends on http://review.cyanogenmod.org/#/c/69169/

Change-Id: Ib078b65252bd5ca4da3d71d8d73f66ba7e8bf333