[boot] ngfd.service file uses new session targets

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
Removed .yaml file

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
added daemon restart during update

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
no need for yaml in spec file
Added requires systemd
Added daemon stop for uninstallation
Finetune uninstallation
Merge pull request #12 from plundstr/master

ngfd.service file uses new targets