Add support for `P80(G3M3)`

### Is your device already requested?

- [x] I have searched the existing issues

### Brand

Teclast

### Name

p80 G3M3

### Device code

USB not suported

### Model

G3M3

### Device images

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### Do you own the device and would be willing to test the installer?

- [x] I own the device and am willing to test the installer on it.

### Additional context

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