ALSA: aica: Use setup_timer() and mod_timer()

No functional change, refactoring with the standard helpers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/sh/aica.c b/sound/sh/aica.c
index f44dda6..8212300 100644
--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -343,11 +343,9 @@
 		mod_timer(&dreamcastcard->timer, jiffies + 4);
 		return;
 	}
-	init_timer(&(dreamcastcard->timer));
-	dreamcastcard->timer.data = (unsigned long) substream;
-	dreamcastcard->timer.function = aica_period_elapsed;
-	dreamcastcard->timer.expires = jiffies + 4;
-	add_timer(&(dreamcastcard->timer));
+	setup_timer(&dreamcastcard->timer, aica_period_elapsed,
+		    (unsigned long) substream);
+	mod_timer(&dreamcastcard->timer, jiffies + 4);
 }
 
 static int snd_aicapcm_pcm_open(struct snd_pcm_substream