doc: Fix remaining qdoc warnings in platformheaders

clang needed to see so type definitions that aren't there
for some platforms, so this update provides defaults when
qdoc is running.

Change-Id: I15e635b31dd651457f828f90c8dd132959c826e6
Reviewed-by: Martin Smith <martin.smith@qt.io>

src/platformheaders/eglfsfunctions/qeglfsfunctions.qdoc

@@ -95,3 +95,48 @@
     \internal
     \preliminary
 */
+
+/*!
+    \typedef QEglFSFunctions::Vsp2AddBlendListenerType
+    \internal
+*/
+
+/*!
+    \typedef QEglFSFunctions::Vsp2AddLayerType
+    \internal
+*/
+
+/*!
+    \typedef QEglFSFunctions::Vsp2RemoveLayerType
+    \internal
+*/
+
+/*!
+    \typedef QEglFSFunctions::Vsp2SetLayerBufferType
+    \internal
+*/
+
+/*!
+    \typedef QEglFSFunctions::Vsp2SetLayerPositionType
+    \internal
+*/
+
+/*! \fn QByteArray QEglFSFunctions::vsp2AddBlendListenerTypeIdentifier()
+    \internal
+ */
+
+/*! \fn QByteArray QEglFSFunctions::vsp2AddLayerTypeIdentifier()
+    \internal
+ */
+
+/*! \fn QByteArray QEglFSFunctions::vsp2RemoveLayerTypeIdentifier()
+    \internal
+ */
+
+/*! \fn QByteArray QEglFSFunctions::vsp2SetLayerBufferTypeIdentifier()
+    \internal
+ */
+
+/*! \fn QByteArray QEglFSFunctions::vsp2SetLayerPositionTypeIdentifier()
+    \internal
+ */

src/platformheaders/nativecontexts/qcocoanativecontext.h

@@ -45,6 +45,10 @@
 
 QT_BEGIN_NAMESPACE
 
+#if defined(Q_CLANG_QDOC)
+typedef void NSOpenGLContext;
+#endif
+
 struct QCocoaNativeContext
 {
     QCocoaNativeContext()

src/platformheaders/nativecontexts/qeglnativecontext.h

@@ -46,6 +46,11 @@
 
 QT_BEGIN_NAMESPACE
 
+#if defined(Q_CLANG_QDOC)
+typedef int EGLContext;
+typedef int EGLDisplay;
+#endif
+
 struct QEGLNativeContext
 {
     QEGLNativeContext()

src/platformheaders/nativecontexts/qglxnativecontext.h

@@ -46,6 +46,13 @@
 
 QT_BEGIN_NAMESPACE
 
+#if defined(Q_CLANG_QDOC)
+typedef int GLXContext;
+typedef void Display;
+typedef int Window;
+typedef int VisualID;
+#endif
+
 struct QGLXNativeContext
 {
     QGLXNativeContext()

src/platformheaders/nativecontexts/qglxnativecontext.qdoc

@@ -77,7 +77,7 @@
  */
 
 /*!
-  \fn QGLXNativeContext::QGLXNativeContext(GLXContext ctx, Display *dpy = 0, Window wnd = 0, VisualID vid = 0)
+  \fn QGLXNativeContext::QGLXNativeContext(GLXContext ctx, Display *dpy, Window wnd, VisualID vid)
 
   Constructs a new instance with the provided \a ctx, \a dpy, \a wnd, \a vid handles.
  */

src/platformheaders/nativecontexts/qwglnativecontext.h

@@ -46,6 +46,11 @@
 
 QT_BEGIN_NAMESPACE
 
+#if defined(Q_CLANG_QDOC)
+typedef int HGLRC;
+typedef int HWND;
+#endif
+
 class QWGLNativeContext
 {
 public:

src/platformheaders/windowsfunctions/qwindowswindowfunctions.qdoc

@@ -124,7 +124,7 @@
 */
 
 /*!
-    \fn QByteArray setWindowActivationBehaviorIdentifier()
+    \fn QByteArray QWindowsWindowFunctions::setWindowActivationBehaviorIdentifier()
 
     This function returns a bytearray that can be used to query
     QGuiApplication::platformFunction() to retrieve the SetWindowActivationBehaviorType