default or selected kernelversion does not have config value CONFIG_VIDEO_MX1.
Result is shown for kernelversion 6.5.1

i.MX1/i.MXL CMOS Sensor Interface driver

modulename: mx1_camera.ko

configname: CONFIG_VIDEO_MX1

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>V4L platform devices
└─>i.MX1/i.MXL CMOS Sensor Interface driver
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
This is a v4l2 driver for the i.MX1/i.MXL CMOS Sensor Interface

source code:
drivers/media/platform//soc_camera/mx1_camera.c