[tone-generator] Use lower dialtone volume

Drop dtmf volume from 50% to 15%.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>
Merge pull request #1 from spiiroin/use_lower_dialtone_volume

Use lower dialtone volume
[boot] service file uses new boot targets

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
Merge pull request #2 from plundstr/master

[boot] service file uses new boot targets
[tone-generator] Disable excessive logging by default.
Merge pull request #3 from jusa/dev

Disable excessive logging by default.
[tone-generator] Tag different types of tones.
Merge pull request #4 from jusa/tagging

[tone-generator] Tag different types of tones.