audio-service: submission 9

* fix problems with allowed the user to set out-of-range volume value
* support for enabling routing needed when a voice call is active

Signed-off-by: Simon Busch <morphis@gravedo.de>
ofono: upgrade to version 1.14 developed by the Nemo Mobile project

Signed-off-by: Simon Busch <morphis@gravedo.de>