[android] less hacky way to disable glsl

src/config/user_config.hpp

@@ -447,7 +447,11 @@ namespace UserConfigParams
             PARAM_DEFAULT(  IntUserConfigParam(120, "max_fps",
                        &m_video_group, "Maximum fps, should be at least 60") );
     PARAM_PREFIX BoolUserConfigParam        m_force_legacy_device
+#ifndef ANDROID
         PARAM_DEFAULT(BoolUserConfigParam(false, "force_legacy_device",
+#else
+        PARAM_DEFAULT(BoolUserConfigParam(true, "force_legacy_device",
+#endif
         &m_video_group, "Force OpenGL 2 context, even if OpenGL 3 is available."));
 
     PARAM_PREFIX BoolUserConfigParam        m_texture_compression

src/graphics/irr_driver.cpp

@@ -2219,11 +2219,9 @@ void IrrDriver::update(float dt)
 
     if (world)
     {
-#ifndef ANDROID
         if (CVS->isGLSL())
             renderGLSL(dt);
         else
-#endif
             renderFixed(dt);
             
         GUIEngine::Screen* current_screen = GUIEngine::getCurrentScreen();