wifi: Fix error in parsing syslog with "+" timezone

Use a regular-expression split

BUG=None
TEST=004SuspendWEP on a machine that reports "+00:00" timestamps

Change-Id: I1751828bc0b96a38f070ec83f3e0e99363331384
Reviewed-on: http://gerrit.chromium.org/gerrit/3031
Reviewed-by: Sam Leffler <sleffler@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
1 file changed