[scudo] Provide allocator declaration am: be9f4b02c6 am: 6293736553 am: a45d377f08

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/2066954

Change-Id: Iad69f64cc45d3577c9ab1098ea35cd20dd272b55
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>