USBDevice for STM support

Dependents:   Nucleo_Usb_JoyMouse Nucleo_usbmouse Nucleo_usbmouse ELEC350_1-referral-2018-usb-hid ... more

This library contains all mbed usb device library (mbed-os\features\unsupported\USBDevice).

Branch:
master
Revision:
4:50ec00aa4515
Parent:
0:ad7d804e900c