[automerger skipped] Camera: Add new hidden API for camera open/close callback am: e375ee8f8a -s ours am: dd6b0c0c4e -s ours

am skip reason: Change-Id I04cae782d96f0e32be8ef588dcd328f84b32887a with SHA-1 6d76d3b1f6 is in history

Change-Id: I3e5f41f359b757a6ed89d607b815ed1d1f5b95d9