[ALSA] aica - fix behaviour in poor resource conditions

Fix behaviour in poor resource conditions.  With this new patch,
tidied with indent and with SNDRV_PCM_TRIGGER_STOP being used.
Signed-off by: Adrian McMenamin <adrian@mcmen.demon.co.uk>

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/sh/aica.h

@@ -69,6 +69,7 @@ struct aica_channel {
 };
 
 struct snd_card_aica {
+	struct work_struct spu_dma_work;
 	struct snd_card *card;
 	struct aica_channel *channel;
 	struct snd_pcm_substream *substream;