SDWARFMISC was added in golang.org/cl/93664.

Change-Id: Ifab0a5effd8e64a2b7916004aa35d51030f23d15
Reviewed-on: https://go-review.googlesource.com/111261
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>