nfcreader does not read DEBUG env var

[stigok]

[stigok]

Logs are flooded with:

Oct 28 23:52:46 dev-pi-1 doord.py[1918]: # no card found.
Oct 28 23:52:46 dev-pi-1 doord.py[1918]: # polling ...
Oct 28 23:52:47 dev-pi-1 doord.py[1918]: # no card found.
Oct 28 23:52:47 dev-pi-1 doord.py[1918]: # polling ...
Oct 28 23:52:48 dev-pi-1 doord.py[1918]: # no card found.
Oct 28 23:52:48 dev-pi-1 doord.py[1918]: # polling ...

That problem will be gone when fixing this, as DEBUG is set in the systemd service file.

But I think it's nice to get an indication that the reader is in fact working, but I wonder if there is a better way. Suggestions?