Merge "Revert "Remove unused hardware/bluetooth.h include"" am: 3ac998fa8c am: 79119d91d0 am: f1c107e68d am: e908a03e1d am: 5d55546bfb

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2594896

Change-Id: Iab0646564298f9a9c9621cdca25debdce9dbfbe4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>