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: Ic3fce3d00e41e74d49afd753268223efd1541ae5