BugLink: http://bugs.launchpad.net/bugs/1721455

Dell Wireless 5819/5818 devices are re-branded Sierra Wireless MC74
series which will by default boot with vid 0x413c and pid's 0x81cf,
0x81d0, 0x81d1,0x81d2.
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Acked-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>