Camera: Clarify interaction between aeTargetFpsRange and minDuration am: 60d00de58e am: bcca19937f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/24867909

Change-Id: I30adcc8d9f2ab3c25005e1821715783b0820c4e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>