Merge "libbinder_rs: Add support for attributes to declare_binder_enum" am: 7ad74670a2 am: 38c4a8de07 am: 95d7b7bcaf am: 2b85650125

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1869740

Change-Id: I7705646de001b0fa1e8e4e411f0ed3c62b6d7536