charger: fix secondary display not turning off after first display was off am: 426bbdb47c

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/19983729

Change-Id: Ideab5cf46001e16e446b9f04eae9802cf43c1cde
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>