power_suspend: Fix hwclock output parsing code.

The following upstream util-linux patch changed the output of hwclock,
which breaks the parsing code in power_suspend.py

  "hwclock: internationalizing the message of the used interface"
  http://git.kernel.org/cgit/utils/util-linux/util-linux.git/commit/?id=b2d97db8c80eacab2e028cd4840064f063410b2b

BUG=chromium:423492
TEST=Run network_MobileSuspendResume tests.

Change-Id: I6424b8006512e174d744112a23489df01dbf7aff
Reviewed-on: https://chromium-review.googlesource.com/225211
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
(cherry picked from commit ef8c03fa49b190485696689d77f64ea5c665ff8d)
Reviewed-on: https://chromium-review.googlesource.com/240287
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Commit-Queue: Bernie Thompson <bhthompson@chromium.org>
Tested-by: Bernie Thompson <bhthompson@chromium.org>
1 file changed