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/plugins/directshow/player/directshowplayerservice.cpp

@@ -156,7 +156,7 @@ QMediaControl *DirectShowPlayerService::requestControl(const char *name)
 {
     if (qstrcmp(name, QMediaPlayerControl_iid) == 0) {
         return m_playerControl;
-    } else if (qstrcmp(name, QAudioEndpointSelector_iid) == 0) {
+    } else if (qstrcmp(name, QAudioEndpointSelectorControl_iid) == 0) {
         return m_audioEndpointControl;
     } else if (qstrcmp(name, QMetaDataReaderControl_iid) == 0) {
         return m_metaDataControl;