Merge "Add some updates to documentation regarding concurrent camera operation." into rvc-dev am: 416e3d94 am: 0bd046e4 am: 7dd86106

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

Change-Id: Ic0d0dd9539fba6b55f59222cb95098972456f011