libbinder: driver unfinished write error code

This fatal log used to be hidden inside of a function (Parcel::remove)
which always failed, and so when it was removed, the error gained
context, but I failed to include other relevant information in the log,
such as the error code.

Bug: 154144726
Test: m only
Change-Id: I477aaee1a335a9faf8c9b249a97c979c08bc4ebf