CONFIG_MSP_HAS_USB is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_MSP_HAS_USB (not configurable)

modulename: msp_usb.ko

configname: CONFIG_MSP_HAS_USB

Linux Kernel Configuration
└─>MSP_HAS_USB
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
source code:
arch/mips/pmc-sierra/msp71xx/msp_usb.c
depends
CONFIG_PMC_MSP