Camera API: Allow state change when backend is on standby
Camera API: Allow state change when backend is on standby

Allow client to set another State if the backend is on StandbyStatus.
This allows client to trigger camera activation after backend has
fallen to StandbyStatus (after idle timeout).

Reviewed-by: Dmytro Poplavskiy
Change-Id: Ib1d375665702851bdb2e80d4633ed3f4ca5f05ba

qtproject/qt-mobility,tmcguire/qt-mobility,kaltsi/qt-mobility,kaltsi/qt-mobility,enthought/qt-mobility,enthought/qt-mobility,tmcguire/qt-mobility,tmcguire/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,tmcguire/qt-mobility,kaltsi/qt-mobility,kaltsi/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,enthought/qt-mobility,qtproject/qt-mobility,qtproject/qt-mobility,enthought/qt-mobility,qtproject/qt-mobility,enthought/qt-mobility,enthought/qt-mobility,tmcguire/qt-mobility