add poweroff command

hc

2023-12-14 982b8cc116118b3463d3f332581945625722acd8

1
2
# Locally computed:
sha256 945e74d8e27683f9b8a6f6e529557b305d120df347a960a6a7ead6cb388f4072  libnfc-1.7.1.tar.bz2