Add an IRPC changelog.

This document is meant to provide a clear summation for vendors looking
for a reference of what has changed from release to release, as well as
documentation for those working on developing the
IRemotelyProvisionedComponent interface.

Bug: 227266513
Test: The document is readable.
Change-Id: I909e22a31a88856af911a80a52ec7eda263693db
1 file changed