Merge "Stop respawning serial console if disabled" am: a6b295b9

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2485621



Change-Id: I7cd7e1bd58b65e52dbfff4b3b2ba197f10cc8b9f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>