AT91 USB Device Port

configname: CONFIG_USB_GADGET_AT91

USB Peripheral Controller
└─>AT91 USB Device Port
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Many Atmel AT91 processors (such as the AT91RM2000) have a
full speed USB Device Port with support for five configurable
endpoints (plus endpoint zero).

Say "y" to link the driver statically, or "m" to build a
dynamically linked module called "at91_udc" and force all
gadget drivers to also be dynamically linked.