[ANDROID] Move open-dice bindgens and bindgen tests next to wrappers am: a873dcf070

Original change: https://android-review.googlesource.com/c/platform/external/open-dice/+/2439496

Change-Id: Ifebb6e693eac3d9a2ca1954b5f4efb054836dbf5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>