ALSA: bebob: use normalized representation for the type of clock source

This commit changes function prototype and its processing. As a result,
function caller can execute additional processing according to detected
clock source.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h
index 368b62d..73317d8 100644
--- a/sound/firewire/bebob/bebob.h
+++ b/sound/firewire/bebob/bebob.h
@@ -212,8 +212,8 @@
 /* for AMDTP streaming */
 int snd_bebob_stream_get_rate(struct snd_bebob *bebob, unsigned int *rate);
 int snd_bebob_stream_set_rate(struct snd_bebob *bebob, unsigned int rate);
-int snd_bebob_stream_check_internal_clock(struct snd_bebob *bebob,
-					  bool *internal);
+int snd_bebob_stream_get_clock_src(struct snd_bebob *bebob,
+				   enum snd_bebob_clock_type *src);
 int snd_bebob_stream_discover(struct snd_bebob *bebob);
 int snd_bebob_stream_init_duplex(struct snd_bebob *bebob);
 int snd_bebob_stream_start_duplex(struct snd_bebob *bebob, unsigned int rate);