msm8974: use 48KHz sampling rate for A2DP

This is to match

http://review.cyanogenmod.org/#/c/80463/

Change-Id: Ie706b5a252131bbc5fd6279d64f0bebbec3c6fb2
msm8974: sepolicy for display tuning knobs

Change-Id: I1cbf3a8e9aeef65a7302d9acaabcb82f06a9aaa9
selinux: Fix access to the vibrator amplification sysfs

Settings needs access for the VibratorHW class

Change-Id: I6daffd37e3d12780688b81005c1f8ff3ea55280a
build: Avoid poisoning the host binaries with bad ABIs

the vector class symbols are only needed on the target. Don't inject
(or expect) them into the host binaries to avoid multi-device build
conflicts and ABI breakage

Change-Id: I224678f172bf38b820f507b1ec8540d60b865772