Rename a few controls.

The encoder controls could be confused with actual encoding, so make
clear they are just settings.  Also, the end point selector controls
were not named very well.

Change-Id: I27f8bf9c865c5f295abad97c01ef98752af42613
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Reviewed-by: Ling Hu <ling.hu@nokia.com>

src/gsttools/qgstreameraudioinputendpointselector.cpp

@@ -51,7 +51,7 @@
 #endif
 
 QGstreamerAudioInputEndpointSelector::QGstreamerAudioInputEndpointSelector(QObject *parent)
-    :QAudioEndpointSelector(parent)
+    :QAudioEndpointSelectorControl(parent)
 {
     update();
 }

src/gsttools/qgstreamervideoinputdevicecontrol.cpp

@@ -57,7 +57,7 @@
 #include <linux/videodev2.h>
 
 QGstreamerVideoInputDeviceControl::QGstreamerVideoInputDeviceControl(QObject *parent)
-    :QVideoDeviceControl(parent), m_selectedDevice(0)
+    :QVideoDeviceSelectorControl(parent), m_selectedDevice(0)
 {
     update();
 }