This improves the error message if we accidentally call this method on
a CPU which does not support it.

R=mstarzinger@chromium.org

Bug: v8:6600
Change-Id: If67bf9e95ab0e71d832a833a70b6ba748b53296e
Reviewed-on: https://chromium-review.googlesource.com/1219631Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55796}