default or selected kernelversion does not have config value CONFIG_VIDEO_SH_MOBILE_CSI2.
Result is shown for kernelversion 6.5.1

SuperH Mobile MIPI CSI-2 Interface driver

modulename: sh_mobile_csi2.ko

configname: CONFIG_VIDEO_SH_MOBILE_CSI2

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>V4L platform devices
└─>SuperH Mobile MIPI CSI-2 Interface driver
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
This is a v4l2 driver for the SuperH MIPI CSI-2 Interface

source code:
drivers/media/platform//soc_camera/sh_mobile_csi2.c