ALSA: bebob: Fix failure to detect source of clock for Terratec Phase 88

This patch fixes a failure to open PCM device with -ENOSYS in
Terratec Phase 88.

Terratec Phase 88 has two Selector Function Blocks of AVC Audio subunit
to switch source of clock. One is to switch internal/external for the
source and another is to switch word/spdif for the external clock.

The IDs for these Selector Function Blocks are 9 and 8. But in current
implementation they're 0 and 0.
Reported-by: András Murányi <muranyia@gmail.com>
Tested-by: András Murányi <muranyia@gmail.com>
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/bebob/bebob_terratec.c

@@ -17,10 +17,10 @@ phase88_rack_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
 	unsigned int enable_ext, enable_word;
 	int err;
 
-	err = avc_audio_get_selector(bebob->unit, 0, 0, &enable_ext);
+	err = avc_audio_get_selector(bebob->unit, 0, 9, &enable_ext);
 	if (err < 0)
 		goto end;
-	err = avc_audio_get_selector(bebob->unit, 0, 0, &enable_word);
+	err = avc_audio_get_selector(bebob->unit, 0, 8, &enable_word);
 	if (err < 0)
 		goto end;