Merge "Revert "lshal: use std::async"" into main am: cb59ad9732 am: 4f1c485272

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2942572

Change-Id: I55392b139923b79609b3398355a40bc03ee11af1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>