Add additional baud rates supported by SPID MD-02 controller

plugins/feature/gs232controller/gs232controllergui.ui

@@ -339,6 +339,16 @@
           <string>115200</string>
          </property>
         </item>
+        <item>
+         <property name="text">
+          <string>230400</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>460800</string>
+         </property>
+        </item>
        </widget>
       </item>
       <item row="2" column="3">