Debian-Pi-Aarch64/docs/pi_zero_2_w_minGPUm.md

## cmdline

add:

```
coherent_pool=6M smsc95xx.turbo_mode=N cma=16M CMA=16M
```

## config

add:

```
gpu_mem=16
gpu_mem_512=16
cma_lwm=16
cma_hwm=16
cma_offline_start=16
```

## Note

The min GPU size is >=16M