Port 72823c8c

Original Commit Message:

    {RegisterConfiguration} is not used inside assembler.h.
    Instead, include it where needed.

R=clemensh@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Id79b6eda6f6ce9c105997ec65c9f72398af29954
Reviewed-on: https://chromium-review.googlesource.com/c/1342661Reviewed-by: Muntasir Mallick <mmallick@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#57620}