Add Sierra Gobi 3000 MC8355 modem to ModemManager blacklist.

BUG=chrome-os-partner:17480.
TEST=Verify that ModemManager does not handle an MC8355 modem.

Change-Id: I73867dd612f0ba90160ea5e131cb864c9afcee57
Reviewed-on: https://gerrit.chromium.org/gerrit/42150
Reviewed-by: Ben Chan <benchan@chromium.org>
Tested-by: Shawn Nematbakhsh <shawnn@chromium.org>
Commit-Queue: Shawn Nematbakhsh <shawnn@chromium.org>
1 file changed