purge linux/err.h usage

Only used in one place, so inline it.

BUG=chromium:878440
TEST=build works

Change-Id: I3ea5c5094e74c7e1382642adf41721cf1f1340a6
Reviewed-on: https://chromium-review.googlesource.com/1194718
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
2 files changed