pm-utils: use ASCII only

This file has a single 0xA0 byte which is presumably from ISO 8859-1
(NO-BREAK SPACE).  We want everything to be ASCII or UTF-8 only.

BUG=chromium:997354,chromium:1029046,b:145299234
TEST=cros_mark_as_stable doesn't crash anymore w/UnicodeDecodeError

Change-Id: I0907b71661254bb445293ba50b32c72c26f5d45b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/1929613
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/1946681
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Auto-Submit: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/1947073
1 file changed