added toggle to adjust system sound settings

Author: eFiniLan

selfdrive/ui/qt/offroad/settings.cc

@@ -280,6 +280,14 @@ DevicePanel::DevicePanel(SettingsWindow *parent) : ListWidget(parent) {
   });
   addItem(translateBtn);
 
+  #ifdef QCOM
+  auto sysVolBtn = new ButtonControl(tr("Adjust System Sound Settings"), tr("ADJUST"), "");
+  connect(sysVolBtn, &ButtonControl::clicked, [=]() {
+    QObject::connect(sysVolBtn, &ButtonControl::clicked, [=]() { HardwareEon::launch_vol(); });
+  });
+  addItem(sysVolBtn);
+  #endif
+
   QObject::connect(uiState(), &UIState::offroadTransition, [=](bool offroad) {
     for (auto btn : findChildren<ButtonControl *>()) {
       btn->setEnabled(offroad);