Fix a few header style violations.

Missing Q_MODULE or using moc keywords.

Change-Id: I3cb21799488c6f57c45d8e32862a49fadd083b99
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>

src/multimedia/controls/qmediaaudioprobecontrol.h

@@ -57,7 +57,7 @@ class Q_MULTIMEDIA_EXPORT QMediaAudioProbeControl : public QMediaControl
 public:
     virtual ~QMediaAudioProbeControl();
 
-signals:
+Q_SIGNALS:
     void audioBufferProbed(const QAudioBuffer &buffer);
     void flush();
 

src/multimedia/controls/qmediaavailabilitycontrol.h

@@ -64,7 +64,7 @@ public:
 
     virtual QtMultimedia::AvailabilityStatus availability() const = 0;
 
-signals:
+Q_SIGNALS:
     void availabilityChanged(QtMultimedia::AvailabilityStatus availability);
 
 protected:

src/multimedia/controls/qmediavideoprobecontrol.h

@@ -59,7 +59,7 @@ class Q_MULTIMEDIA_EXPORT QMediaVideoProbeControl : public QMediaControl
 public:
     virtual ~QMediaVideoProbeControl();
 
-signals:
+Q_SIGNALS:
     void videoFrameProbed(const QVideoFrame &frame);
     void flush();
 

src/multimedia/qmediaenumdebug.h

@@ -57,6 +57,8 @@
 
 QT_BEGIN_HEADER
 
+QT_MODULE(Multimedia)
+
 #ifndef QT_NO_DEBUG_STREAM
 
 #define Q_MEDIA_ENUM_DEBUG(Class,Enum) \

src/multimedia/qtmultimediadefs.h

@@ -57,6 +57,8 @@
 
 QT_BEGIN_HEADER
 
+QT_MODULE(Multimedia)
+
 #ifndef QT_STATIC
 #    if defined(QT_BUILD_MULTIMEDIA_LIB)
 #        define Q_MULTIMEDIA_EXPORT Q_DECL_EXPORT