1. this revision includes support for systemd notify (adapt the service
   and include a systemd dependency)
2. it also includes support for i2c pheripherals and libi2c is required
3. various other fixes are included with this bump
4. this change also cleans up the service file of unneeded dependencies
   and environment variables

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>