adding support for serial port
typo
only use one port with CDMA at the moment.
Merge branch 'master' of https://github.com/mbedmicro/mbed
- add support for MultiPort Serial Devices
- allow to configure the debug level of the USB stack
fixed the comparison
CDMA currently only uses one CDC
Merge pull request #121 from mazgch/master

improve USB host library and cellular modem stack