Small fixes for TGA board.

MicroMDAEPiano.ino

@@ -161,11 +161,12 @@ void setup()
   sgtl5000_1.unmuteLineout();
   sgtl5000_1.autoVolumeDisable(); // turn off AGC
   sgtl5000_1.volume(1.0, 1.0);
-#endif
-
-#ifdef TGA_AUDIO_BOARD
+#elif defined(TGA_AUDIO_BOARD)
   wm8731_1.enable();
   wm8731_1.volume(1.0);
+  Serial.println(F("TGA board enabled."));
+#else
+  Serial.println(F("PT8211 enabled."));
 #endif
 
   //set_volume(vol, vol_left, vol_right);