Use final specifier for all effects implementation classes. am: 6755d76d9d am: ef880df229

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2281902

Change-Id: Ib15863a897d9f73e5cd4c424e755ea01cea9a255
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>