Semi-automatic update. These checks were performed:
- built on NixOS
- ran `/nix/store/w1kd60p20ps8v5pjicl3z9s6y4fmkgy0-iio-sensor-proxy-2.4/bin/iio-sensor-proxy -h` got 0 exit code
- ran `/nix/store/w1kd60p20ps8v5pjicl3z9s6y4fmkgy0-iio-sensor-proxy-2.4/bin/iio-sensor-proxy --help` got 0 exit code
- ran `/nix/store/w1kd60p20ps8v5pjicl3z9s6y4fmkgy0-iio-sensor-proxy-2.4/bin/iio-sensor-proxy help` got 0 exit code
- found 2.4 with grep in /nix/store/w1kd60p20ps8v5pjicl3z9s6y4fmkgy0-iio-sensor-proxy-2.4
- found 2.4 in filename of file in /nix/store/w1kd60p20ps8v5pjicl3z9s6y4fmkgy0-iio-sensor-proxy-2.4
cc "@peterhoeg"
This PR adds support for ```iio-sensor-proxy``` used by GNOME v3 and
others for reading data from the accelerometer, gps, compass and similar sensors
built into some relatively recent laptops.
Additionally, there is a NixOS module exposed via hardware.sensor.iio
for enabling services, udev rules and dbus services.
