Merge "Add some updates to documentation regarding concurrent camera operation." into rvc-dev am: 416e3d94 am: 4a8fd32e am: 3ebf6368 am: f39c3d9f

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/11832204

Change-Id: Icd616b79d9b942bfb78b84225ab08459d615536f