Use bluetooth.core.gap.le.privacy.enabled sysprop to init BLE Privacy am: 06f7bd00

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/17622230



Change-Id: Icfe511b7471ac75112ce67734860b5171d32064e
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>