[automerger skipped] Camera: Add new hidden API for camera open/close callback am: e375ee8f -s ours am: dd6b0c0c -s ours am: ca3bf535 -s ours am: 5380a4af -s ours

am skip reason: Change-Id I04cae782d96f0e32be8ef588dcd328f84b32887a with SHA-1 e375ee8f is in history

Change-Id: I060921624d048fd5d4b312e81e3b0cca80d1e521