Fix [Linux]/[Linuxfb] screen initialization.

For the linuxfb platform the screen was registered
before its geometry was calculated resulting that
the qpa controller will deal with a screen instance
that has geometry of QRect(0,0,1,1) .
This masks pretty much all the painting and the input.
The fix is to call screen init before registering
the screen instance to the qpa controller.

Change-Id: If84daca6587dc368301b578cdbf7b2a65a56a5b5
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>

src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp

@@ -57,7 +57,6 @@ QLinuxFbIntegration::QLinuxFbIntegration(const QStringList &paramList)
     : m_fontDb(new QGenericUnixFontDatabase())
 {
     m_primaryScreen = new QLinuxFbScreen(paramList);
-    screenAdded(m_primaryScreen);
 }
 
 QLinuxFbIntegration::~QLinuxFbIntegration()
@@ -67,7 +66,9 @@ QLinuxFbIntegration::~QLinuxFbIntegration()
 
 void QLinuxFbIntegration::initialize()
 {
-    if (!m_primaryScreen->initialize())
+    if (m_primaryScreen->initialize())
+        screenAdded(m_primaryScreen);
+    else
         qWarning("linuxfb: Failed to initialize screen");
 }
 

src/plugins/platforms/linuxfb/qlinuxfbintegration.h

@@ -70,6 +70,7 @@ public:
 private:
     QLinuxFbScreen *m_primaryScreen;
     QPlatformFontDatabase *m_fontDb;
+
 };
 
 QT_END_NAMESPACE