Generic Tilt sensor: Use degree rather than radians
Generic Tilt sensor: Use degree rather than radians

This is stated in the docs and it is also more consistent with all other
sensors.

Change-Id: I5d1d074630f9efa7371a42d10196984549769e24
Reviewed-by: Lorn Potter <0e329dfd61bdd4e2b2b708a31f12f199a7656feb@jollamobile.com>

richardmg/qtsensors,kobolabs/qtsensors,mer-qt/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,kobolabs/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,kobolabs/qtsensors,kobolabs/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,mer-qt/qtsensors,richardmg/qtsensors