Doc: Remove incorrect CMake instructions for QtCore-private

Drop the use of \qtcmakepackage for the module page that results in
incorrect instructions, and replace it with a snippet with the correct
commands to use.

Pick-to: 6.5 6.4 6.2
Fixes: QTBUG-109214
Change-Id: I936910ddb9e4118f931d85e4b096ad52006dcc32
Reviewed-by: Kai Köhne <kai.koehne@qt.io>

src/corelib/doc/src/qtcore.qdoc

@@ -18,9 +18,17 @@
 /*!
     \module QtCorePrivate
     \title Qt Core Private C++ Classes
-    \qtcmakepackage CorePrivate
     \qtvariable core-private
-
-    \brief Provides private core functionality.
     \preliminary
+    \brief Provides private core functionality.
+
+//! [qtcoreprivate-usage]
+    When building with CMake, use the following commands to use
+    private Qt Core APIs:
+
+    \badcode
+    find_package(Qt6 REQUIRED COMPONENTS Core)
+    target_link_libraries(mytarget PRIVATE Qt6::CorePrivate)
+    \endcode
+//! [qtcoreprivate-usage]
 */

src/corelib/platform/android/qandroidextras.cpp

@@ -126,6 +126,8 @@ QAndroidBinder QAndroidParcelPrivate::readBinder() const
     \l {https://developer.android.com/reference/android/os/Parcel.html}{Android Parcel}
     methods.
 
+    \include qtcore.qdoc qtcoreprivate-usage
+
     \since 6.2
 */
 
@@ -243,6 +245,8 @@ QJniObject QAndroidParcel::handle() const
     \l {https://developer.android.com/reference/android/os/Binder.html}{Android Binder}
     methods.
 
+    \include qtcore.qdoc qtcoreprivate-usage
+
     \since 6.2
 */
 
@@ -383,6 +387,8 @@ QJniObject QAndroidBinder::handle() const
 
     It is useful when you perform a QtAndroidPrivate::bindService operation.
 
+    \include qtcore.qdoc qtcoreprivate-usage
+
     \since 6.2
 */
 
@@ -507,6 +513,8 @@ public:
 
   Create a subclass of this class to be notified of the results when using the
   \c QtAndroidPrivate::startActivity() and \c QtAndroidPrivate::startIntentSender() APIs.
+
+  \include qtcore.qdoc qtcoreprivate-usage
  */
 
 /*!
@@ -604,6 +612,8 @@ public:
     \l {https://developer.android.com/reference/android/app/Service.html}{Android Service}
     methods.
 
+    \include qtcore.qdoc qtcoreprivate-usage
+
     \since 6.2
 */
 
@@ -674,6 +684,8 @@ QAndroidBinder* QAndroidService::onBind(const QAndroidIntent &/*intent*/)
     \l {https://developer.android.com/reference/android/content/Intent.html}{Android Intent}
     methods.
 
+    \include qtcore.qdoc qtcoreprivate-usage
+
     \since 6.2
 */
 
@@ -799,6 +811,8 @@ QJniObject QAndroidIntent::handle() const
     \brief The QtAndroidPrivate namespace provides miscellaneous functions
            to aid Android development.
     \inheaderfile QtCore/private/qandroidextras_p.h
+
+    \include qtcore.qdoc qtcoreprivate-usage
 */
 
 /*!