Add missing classname entry for positioning and location qml module.

Task-number: QTBUG-38770
Change-Id: Id4577bd23858880b6f406f9d82a8e5195c4e3d8c
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: I05aa3988ce01f01bf987e259dcac0144e52cdf89