network_3GSuspendResume: Don't break on GSM modems

We were looking for the path to cromo ("org.chromium.ModemManager")
and the substring "meid" in modem status output, neither of which
appear for GSM modems supported by modem-manager.

Check for the GSM versions of these ("org.flimflam.ModemManager" and
"EquipmentIdentifier").

BUG=chromium-os:19955
TEST=network_3GSuspendResume now passes on GT-Y3400

Change-Id: If37368025e17a5fe796d416cf4d253f53567536b
Reviewed-on: https://gerrit.chromium.org/gerrit/12744
Reviewed-by: Nathan J. Williams <njw@chromium.org>
Commit-Ready: ttuttle <ttuttle@chromium.org>
Tested-by: ttuttle <ttuttle@chromium.org>
1 file changed