default or selected kernelversion does not have config value CONFIG_USB_CNS3XXX_EHCI.
Result is shown for kernelversion 6.9.9

Cavium CNS3XXX EHCI Module (DEPRECATED)

configname: CONFIG_USB_CNS3XXX_EHCI

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>Cavium CNS3XXX EHCI Module (DEPRECATED)
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
This option is deprecated now and the driver was removed, use
USB_EHCI_HCD_PLATFORM instead.

Enable support for the CNS3XXX SOC's on-chip EHCI controller.
It is needed for high-speed (480Mbit/sec) USB 2.0 device
support.