ALSA: hdspm - Add S/PDIF, XLR, WCK48 and ADAT-in controls for RME AIO cards

This commit adds the following ALSA controls:

   - S/PDIF Out Optical to switch S/PDIF Out from coaxial to optical
   - S/PDIF Out Professional to send the Pro bit in the output stream
   - ADAT-Internal to enable ADAT/TDIF Expansion Board (AEB/TEB)
   - XLR Breakout Cable if analogue I/O uses the XLR breakout cable
   - WCK48 to force WordClock to the 32-48kHz range (single speed) if
     the card is operating at higher frequencies

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/rme9652/hdspm.c

@@ -4327,7 +4327,12 @@ static struct snd_kcontrol_new snd_hdspm_controls_aio[] = {
 	HDSPM_AUTOSYNC_SAMPLE_RATE("SPDIF Frequency", 2),
 	HDSPM_AUTOSYNC_SAMPLE_RATE("ADAT Frequency", 3),
 	HDSPM_AUTOSYNC_SAMPLE_RATE("TCO Frequency", 4),
-	HDSPM_AUTOSYNC_SAMPLE_RATE("SYNC IN Frequency", 5)
+	HDSPM_AUTOSYNC_SAMPLE_RATE("SYNC IN Frequency", 5),
+	HDSPM_TOGGLE_SETTING("S/PDIF Out Optical", HDSPM_c0_Spdif_Opt),
+	HDSPM_TOGGLE_SETTING("S/PDIF Out Professional", HDSPM_c0_Pro),
+	HDSPM_TOGGLE_SETTING("ADAT internal (AEB/TEB)", HDSPM_c0_AEB1),
+	HDSPM_TOGGLE_SETTING("XLR Breakout Cable", HDSPM_c0_Sym6db),
+	HDSPM_TOGGLE_SETTING("Single Speed WordClock Out", HDSPM_c0_Wck48)
 
 		/*
 		   HDSPM_INPUT_SELECT("Input Select", 0),