Added missing change registration when setting the device index in the sampling device control

sdrgui/gui/samplingdevicecontrol.cpp

@@ -62,11 +62,13 @@ void SamplingDeviceControl::setSelectedDeviceIndex(int index)
     if (m_rxElseTx)
     {
         PluginInterface::SamplingDevice samplingDevice = DeviceEnumerator::instance()->getRxSamplingDevice(index);
+        DeviceEnumerator::instance()->changeRxSelection(m_deviceTabIndex, index);
         ui->deviceSelectedText->setText(samplingDevice.displayedName);
     }
     else
     {
         PluginInterface::SamplingDevice samplingDevice = DeviceEnumerator::instance()->getTxSamplingDevice(index);
+        DeviceEnumerator::instance()->changeTxSelection(m_deviceTabIndex, index);
         ui->deviceSelectedText->setText(samplingDevice.displayedName);
     }