Introduce prebuilt_vendor module type am: 3ca07a1e

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3387560



Change-Id: I1135f88b24ed39e877ecef856f6b3309dfb98809
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>