default or selected kernelversion does not have config value CONFIG_VIDEO_C3_MIPI_ADAPTER.
Result is shown for kernelversion 6.16-rc7

Amlogic C3 MIPI adapter

modulename: c3-mipi-adap.ko

configname: CONFIG_VIDEO_C3_MIPI_ADAPTER

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>Media drivers
└─>Media platform devices
└─>Device Tree and Open Firmware support
└─>Amlogic C3 MIPI adapter
In linux kernel since version 6.1.145 (release Date: 2025-07-14)  
Video4Linux2 driver for Amlogic C3 MIPI adapter.
C3 MIPI adapter mainly responsible for organizing
MIPI data and sending raw data to ISP pipeline.

To compile this driver as a module choose m here.

source code: