alsa: Create unique devicename by including the ID

For adding tabs to the gui, the name must be unique. Because the
"cardDiscriminator" does not work, add the ALSA ID to the card name.

backends/mixer_alsa9.cpp

@@ -310,7 +310,7 @@ int Mixer_ALSA::openAlsaDevice(const QString& devName)
         return Mixer::ERR_READ;
     }
     m_deviceID = snd_ctl_card_info_get_id( hw_info );
-    const char* mixer_card_name =  snd_ctl_card_info_get_name( hw_info );
+    QString mixer_card_name = QString(snd_ctl_card_info_get_name( hw_info ) + QString(" (") + m_deviceID + QString(")"));
     //QString mixer_card_name_QString = mixer_card_name;
     registerCard(mixer_card_name);