Fix link-type check warnings

Prebuilt files defined in these makefiles are now correctly marked with
LOCAL_SDK_VERSION to let the build system know that they are not using
any Android private APIs. Without LOCAL_SDK_VERSION set, they are by
default regardeed as being built with the private APIs and thus can't be
linked from apps built with SDK. (This has been exceptionally allowed
with warnings but will be errors soon).

Bug: 69899800
Test: mma -j under this directory
Change-Id: Ic364c6dc828dd81e80db12093b5255028308fbfb