sepolicy: add device-specific sepolicies

Change-Id: Ibfce7ff8fcd2ca42d8e6b9b20eb662538a0915ce
jf: selinux enforcing

Change-Id: Ib95cceddd5a811df1e3aca09fe59c7901036e7f0
jf: sepolicy: fix /data/cam_socket* denials

Change-Id: Ia4d5b7408c5a11a2d190a9b3f6139cfe59fbc504
jf: remove deprecated audio_policy.msm8960

Change-Id: I2b8bffde57aff1fd563fa07bc7cd07017b0587cf