Documentation updates to camera HAL interfaces.

Bug: 124248114

Test: mm -j64

Change-Id: If1cf0e2d464ac62e5897b8faaf4835d06c12edd8
Merged-In: Ibc2415531a16e42ae81e33c3bdb28aca08e6a5fe
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>
6 files changed