Add proximity wake flag

Use frameworks opt-in functionality.

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

Change-Id: Ib078b65252bd5ca4da3d71d8d73f66ba7e8bf333
msm8974: [HACK] Restore combined primary audio path

 * The underrun (click/pop) seems to still be possible
   when using FAST output, and happens most often
   when playing a ringtone out of suspend.

Change-Id: Icd30aae31f0c911a142e12c09f701be383896cb1
msm8974-common: Add Widevine proprietary libs

Change-Id: I7cb58f06ec9bfb21e5bf34df2b6677e159e87549
msm8974-common: Sort makefile targets

Change-Id: I4557d0e4a688628598239fb90ac8aa3a58fb7d13
msm8974-common: Remove unused liblisten entries

Change-Id: I084b951418d3025b1adc14f575d234b229e84bf5