ui: force GLES context

selfdrive/ui/qt/ui.cc

@@ -4,10 +4,13 @@
 
 int main(int argc, char *argv[])
 {
+  QSurfaceFormat fmt;
+  fmt.setRenderableType(QSurfaceFormat::OpenGLES);
+  QSurfaceFormat::setDefaultFormat(fmt);
+
   QApplication a(argc, argv);
 
   MainWindow w;
-
   w.setFixedSize(vwp_w, vwp_h);
   w.show();