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>
diff --git a/77-cromo-gobi-device-blacklist.rules b/77-cromo-gobi-device-blacklist.rules
index b27c8d4..9d17161 100644
--- a/77-cromo-gobi-device-blacklist.rules
+++ b/77-cromo-gobi-device-blacklist.rules
@@ -178,6 +178,12 @@
 # Sierra Wireless Gobi 2000 Modem device (VT773)
 ATTRS{idVendor}=="1199", ATTRS{idProduct}=="900a", ENV{ID_MM_DEVICE_IGNORE}="1"
 
+# Sierra Wireless Gobi 3000 Modem device (MC8355)
+ATTRS{idVendor}=="1199", ATTRS{idProduct}=="9012", ENV{ID_MM_DEVICE_IGNORE}="1"
+
+# Sierra Wireless Gobi 3000 Modem device (MC8355)
+ATTRS{idVendor}=="1199", ATTRS{idProduct}=="9013", ENV{ID_MM_DEVICE_IGNORE}="1"
+
 # CMDTech Gobi 2000 QDL device (VU922)
 ATTRS{idVendor}=="16d8", ATTRS{idProduct}=="8001", ENV{ID_MM_DEVICE_IGNORE}="1"