Merge "Rename Light HAL default implementation variable." am: b6eba859a1 am: bb8f2198f8

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2199722

Change-Id: Ie4082bf6eac474b70f7ca18b215743105a669662
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>