[ALSA] Fix addition of user-defined boolean controls

Fixed the addition of user-defined boolean controls, the private
data size is corrected to be handled properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/core/control.c b/sound/core/control.c
index 6973a96..48ef0a0 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1018,10 +1018,6 @@
 	}
 	switch (info->type) {
 	case SNDRV_CTL_ELEM_TYPE_BOOLEAN:
-		private_size = sizeof(char);
-		if (info->count > 128)
-			return -EINVAL;
-		break;
 	case SNDRV_CTL_ELEM_TYPE_INTEGER:
 		private_size = sizeof(long);
 		if (info->count > 128)