Merge "Microoptimize vdso lookup." into main am: 18a6fa2d2f

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2871814

Change-Id: I661c136e478f485f5ce8a1564964352d48605dac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>