ASoC: tegra: 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/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c
index 4677f26..566655e 100644
--- a/sound/soc/tegra/tegra_wm8903.c
+++ b/sound/soc/tegra/tegra_wm8903.c
@@ -363,6 +363,7 @@
 
 static struct snd_soc_card snd_soc_tegra_wm8903 = {
 	.name = "tegra-wm8903",
+	.owner = THIS_MODULE,
 	.dai_link = &tegra_wm8903_dai,
 	.num_links = 1,