ALSA: firewire-lib: add a kernel API to start AMDTP streams in AMDTP domain

This commit adds a kernel API to start a couple of isochronous contexts
for some AMDTP streams.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/amdtp-stream.h

@@ -282,6 +282,7 @@ void amdtp_domain_destroy(struct amdtp_domain *d);
 int amdtp_domain_add_stream(struct amdtp_domain *d, struct amdtp_stream *s,
 			    int channel, int speed);
 
+int amdtp_domain_start(struct amdtp_domain *d);
 void amdtp_domain_stop(struct amdtp_domain *d);
 
 #endif