Merge "Add support for only starting 64 bit zygote." into tm-d1-dev am: 5fcd22acc7

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/19272483

Change-Id: Ie2a189e55f5359d3b74542b8a364124fbc0d0b51
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>