Re-enable shader disk cache for Integrity

Task-number: QTBUG-58183
Change-Id: Ic1be5db6922259cbef867720e95261d46a5ccaef
Reviewed-by: Kimmo Ollila <kimmo.ollila@theqtcompany.com>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

src/gui/opengl/qopenglshaderprogram.cpp

@@ -3739,11 +3739,6 @@ QOpenGLProgramBinarySupportCheck::QOpenGLProgramBinarySupportCheck(QOpenGLContex
     : QOpenGLSharedResource(context->shareGroup()),
       m_supported(false)
 {
-// Shader cache is disabled for INTEGRITY as the driver doesn't handle
-// unaligned data.
-#if defined(Q_OS_INTEGRITY)
-    return;
-#endif
     if (QCoreApplication::testAttribute(Qt::AA_DisableShaderDiskCache)) {
         qCDebug(DBG_SHADER_CACHE, "Shader cache disabled via app attribute");
         return;