ASoC: pxa: Add .owner to struct snd_soc_card

Missed .owner of struct snd_soc_card will prevent the module from being
removed from underneath its users.

Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/pxa/e740_wm9705.c b/sound/soc/pxa/e740_wm9705.c
index 203ab78a..7b1bc23 100644
--- a/sound/soc/pxa/e740_wm9705.c
+++ b/sound/soc/pxa/e740_wm9705.c
@@ -133,6 +133,7 @@
 
 static struct snd_soc_card e740 = {
 	.name = "Toshiba e740",
+	.owner = THIS_MODULE,
 	.dai_link = e740_dai,
 	.num_links = ARRAY_SIZE(e740_dai),
 };