The last thing I read about the camerasupport revival in the Linux kernel is that something came inbetween. The message about the revival only gave new hope in general, I never read the T100-webcam really got support.
Here some guide.
https://drive.google.com/file/d/1VTzciobFlp7nO2A_M7RNoqYajN8c9AgR/view?fbclid=IwAR1hvLWnBhlmtPtxXgxoRiakRjBZMj5KHPIUzntQU9_IpLLeJDA9ON97WpI
https://wiki.ubuntu.com/Touch/Devices/t100ta?fbclid=IwAR3sCB0cSQjsxXpinPuisYwIwKWfQeMnUftT2Cfdr43eFYQHsmnPahUJVP0