CONFIG_USB_PXA25X (not configurable)

modulename: pxa25x_udc.ko

configname: CONFIG_USB_PXA25X

USB Peripheral Controller
└─>USB_PXA25X
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
source code:
drivers/usb/gadget/pxa25x_udc.c