rbutil: Add erosqnative

- Give each brand its own entry, and make ranges
  of OF versions correspond to hardware changes.
- Temporarily disabled target aigoerosq.
- Post-install hint enabled.
- Added pre-install hint function
- Added optional parameter themename, in case
  the target name does not match the themesite name.
- Made Port Status (statusAsString()) only care about platform
  string prior to first '.'
- Manual: Remove note that rbutil does not support this model

Issues:

 - Cannot uninstall the bootloader - manual instructions are available

Change-Id: I574aad7943ea3d1e543e9449f68240446fec0709

utils/rbutilqt/gui/selectiveinstallwidget.cpp

@@ -409,6 +409,17 @@ void SelectiveInstallWidget::installBootloader(void)
     }
 }
 
+void SelectiveInstallWidget::installBootloaderHints()
+{
+    if(ui.bootloaderCheckbox->isChecked()) {
+        QString msg = BootloaderInstallHelper::preinstallHints(
+                RbSettings::value(RbSettings::Platform).toString());
+        if(!msg.isEmpty()) {
+            QMessageBox::information(this, tr("Manual steps required"), msg);
+        }
+    }
+}
+
 void SelectiveInstallWidget::installBootloaderPost()
 {
     // don't do anything if no bootloader install has been done.