MODSERIAL with support for more devices

Dependents:   1D-Pong BMT-K9_encoder BMT-K9-Regelaar programma_filter ... more

Replaced _name with getName() in MODSERIAL::claim to work with mbed OS 5.1

Tested with older version of mbed as well and it worked fine.

MODSERIAL with support for mbed OS 5.1