UPSTREAM: gsm: fix parsing of unsolicited CREG/CGREG response with RAC

BUG=chromium-os:22071
TEST=network_3GSafetyDance passes, or fails with other errors

Change-Id: I02c8beb1c9bf576f6f3a6dac62a1874fe6a28ae7
Reviewed-on: https://gerrit.chromium.org/gerrit/10821
Reviewed-by: Nathan J. Williams <njw@chromium.org>
Tested-by: ttuttle <ttuttle@chromium.org>
2 files changed