[PATCH] Compile error, ALSA Cirrus Logic driver

Recent header cleanup broke this driver. Needs #include <linux/init.h>

include/sound/initval.h

@@ -144,6 +144,7 @@ static int snd_legacy_find_free_dma(int *dma_table)
 
 #if defined(SNDRV_GET_ID) && !defined(MODULE)
 #include <linux/ctype.h>
+#include <linux/init.h>
 static int __init get_id(char **str, char **dst)
 {
 	char *s, *d;