Merge "Add ABI_STRING definition for riscv64" am: cafc724e am: d28384bd am: 90a2e7a5

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2252176



Change-Id: I3b3aa795477e6a876fd823e2a335de1d4f98064c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>