Merge "Determine whether to enable userfaultfd GC at build time." am: 09207360 am: 90a4db9c

Original change: https://android-review.googlesource.com/c/platform/build/+/2304232



Change-Id: I207475c37450b0f1e62b49214027cceb369a0b78
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>