XTRX input: implemented baseband or device sample rate input option

plugins/samplesink/xtrxoutput/xtrxoutputgui.ui

@@ -446,6 +446,9 @@
          <height>16777215</height>
         </size>
        </property>
+       <property name="toolTip">
+        <string>Toggle between device to host (SR) and base band (BB) sample rate input</string>
+       </property>
        <property name="text">
         <string>SR</string>
        </property>

plugins/samplesink/xtrxoutput/xtrxoutputplugin.cpp

@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////////
-// Copyright (C) 2015 Edouard Griffiths, F4EXB                                   //
+// Copyright (C) 2019 Edouard Griffiths, F4EXB                                   //
 //                                                                               //
 // This program is free software; you can redistribute it and/or modify          //
 // it under the terms of the GNU General Public License as published by          //
@@ -34,7 +34,7 @@
 
 const PluginDescriptor XTRXOutputPlugin::m_pluginDescriptor = {
     QString("XTRX Output"),
-    QString("4.5.2"),
+    QString("4.5.4"),
     QString("(c) Edouard Griffiths, F4EXB"),
     QString("https://github.com/f4exb/sdrangel"),
     true,