ALSA: Add missing .owner=THIS_MODULE to platform_driver definitions

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/sh/sh_dac_audio.c b/sound/sh/sh_dac_audio.c
index f8b01c7..0a33947 100644
--- a/sound/sh/sh_dac_audio.c
+++ b/sound/sh/sh_dac_audio.c
@@ -438,6 +438,7 @@
 	.remove = snd_sh_dac_remove,
 	.driver = {
 		.name = "dac_audio",
+		.owner	= THIS_MODULE,
 	},
 };