[thermalmanager] Add dbus interface to hw thermal object

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
[utils] Fixed dsmetemperature tool to fetch correct values. JB#16006

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
Merge pull request #59 from plundstr/next

dbus support to thermal manager