[PATCH] usb serial: add support for Novatel S720/U720 CDMA/EV-DO modems

Add USB vendor/device IDs for Novatel Wireless S720 and U720 CDMA/EV-DO
modems to airprime.c.

Signed-off-by: Eric Smith <eric@brouhaha.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>