Hi, I bought a Rock 5C with the official fan/heatsink:
https://radxa.com/products/accessories/heatsink-6540b/
After installing the Armbian server image, I ran these two commands:
```bash
ls /sys/class/thermal/cooling_device*/type
cat /sys/class/thermal/cooling_device*/type
```
and found that there is no `pwm-fan`.
Then I installed the official Radxa Debian image and ran these two commands again. `pwm-fan` exists and I can make it starts spinning by running:
```bash
echo 255 | sudo tee /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1
```
Is the fan module supported in Armbian? If yes, how do I activate it?
