enable imx6 specific QSGVideoNode based on a config test

This way it also works custom mkspecs

Change-Id: I7414aac775b797da3487e9625c7212486118b532
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Reviewed-by: Andy Nichols <andy.nichols@digia.com>

config.tests/gpu_vivante/gpu_vivante.pro

@@ -0,0 +1 @@
+SOURCES += main.cpp

config.tests/gpu_vivante/main.cpp

@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Toolkit
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+const int format = GL_VIV_YV12;
+
+int main(int argc, char** argv)
+{
+    return 0;
+}

qtmultimedia.pro

@@ -27,6 +27,7 @@ win32 {
         qtCompileTest(gstreamer_appsrc)
     }
     qtCompileTest(resourcepolicy)
+    qtCompileTest(gpu_vivante)
 }
 
 load(qt_parts)

src/plugins/videonode/videonode.pro

@@ -1,5 +1,5 @@
 TEMPLATE = subdirs
 
-*imx6* {
+config_gpu_vivante {
     SUBDIRS += imx6
 }