start to add support for custom class using bulk in/out endpoints
add CFG_USB_CUSTOM_CLASS for board configure
add descriptor & endpoint in/out number properly for custom_class
add usb_custom_class.c/h
add stub function for usb_custom
add more code, hook up bulk in/out endpoint for custom class
add product id, modify .inf driver for cdc
should be transfer via bulk in with lpc4357 host
Merge branch 'development' of github.com:microbuilder/LPC11U_LPC13U_CodeBase into development