Printing the `oss_audioinfo->[min|max]_rate` for a VCHAN when `hw.snd.feeder_rate_round` is not 0:
```
min_rate=44100
max_rate=96000
```
Which is the min/max of the physical channel.
And with `hw.snd.feeder_rate_round=0`:
```
min_rate=1
max_rate=2016000
```
Which takes the value from `feeder_rate_[min|max]`:
```
root@freebsd:~ # sysctl hw.snd.feeder_rate_min
hw.snd.feeder_rate_min: 1
root@freebsd:~ # sysctl hw.snd.feeder_rate_max
hw.snd.feeder_rate_max: 2016000
```