Camera: Fix missing physical camera availability callback am: 3d316f37 am: 0c956126

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/20291479



Change-Id: Ide7f85b684869edcaa08b08e918afe39209d16e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>