Merge "Adding fastboot_driver interface + mock" am: 3ac1e55e1e am: ee0e75bb8f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2516535

Change-Id: Id44111a9aab39be60abe8a50ad6aa0feaa2f743b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>