Merge "Revert "Deprecate android.hidl.allocator after U vintf"" into main am: 01749e3049 am: 6749f54c6b am: a73d557162

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/2905968

Change-Id: I96446af47e3d71ae1d03704913ca95398bc117d5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>