Blackberry: Affirm that QSensor::Buffering is supported now.
Blackberry: Affirm that QSensor::Buffering is supported now.

The patch adding QSensor::Feature support was developed before buffering
was implemented on Blackberry, so update this to reflect the current
situation.

Also fix compile warning about missing Reserved value.

Change-Id: I085afeefc6c2dc7f520c9ef93d90a93f3e8a03e7
Reviewed-by: Adam Parco <0f1e583627e84e88a7fe5f47b7423357de8beb8f@rim.com>
Reviewed-by: Sean Harmer <dd3a28a27ba8fc1a24091f8e1ee0edededfbc9cc@kdab.com>

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