base

Build update engine binder AIDLs for framework use.

We will define system APIs in framework that talk to the update engine
via binder APIs (e.g. android.os.UpdateEngine etc in follow-up CLs).
This CL adds rules to build the update engine AIDLs for that.

Bug: 26695366
Change-Id: Icee5c7d396aa10e592c2b1fd58b4b369a9b6cbfc