CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC (not configurable)

modulename: platform-fsl-usb2-udc.ko

configname: CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC

Linux Kernel Configuration
└─>IMX_HAVE_PLATFORM_FSL_USB2_UDC
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
source code:
arch/arm/mach-imx/devices/platform-fsl-usb2-udc.c