hdctools: servo: Modify ec.py to match ec console message

EC console messages have been modified to save flash size. We need to
modify the regular expression in EC driver to match them.

BUG=chrome-os-partner:9188
TEST='dut-control fan_target_rpm', 'dut-control fan_actual_rpm', and
'dut-control lid_open' all work.

Change-Id: I91489fd341f22972e26a3a3cf92ac4286e762715
Reviewed-on: https://gerrit.chromium.org/gerrit/23197
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Ready: Vic Yang <victoryang@chromium.org>
Tested-by: Vic Yang <victoryang@chromium.org>
1 file changed