Add host_supported, min_sdk_version and apex_available configs to Android.bp for FP16. am: 80907cb9be am: cbadf74d7b am: 919d1bd8ea

Original change: https://android-review.googlesource.com/c/platform/external/FP16/+/1794287

Change-Id: I1c08c3110a3c97fc20c7512268c65478c88a333f