[automerger skipped] Documentation updates to camera HAL interfaces. am: 48f3952ffc am: cf1fd4de74
am: 41faba33c6 -s ours
am skip reason: change_id Ibc2415531a16e42ae81e33c3bdb28aca08e6a5fe with SHA1 5845a3f05c is in history

Change-Id: I2b7bd5e22da1809d34a4354badeb503c0627daad