Merge "Use __builtin_available to guard LLNDK symbols" into main am: 68fdc51ded

Original change: https://android-review.googlesource.com/c/platform/hardware/libhardware/+/3342634

Change-Id: I98ad81f9e87f32bd5325d4969251941b81eb5edc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>