[media] media, sound: tea575x: constify snd_tea575x_ops structures

The snd_tea575x_ops structures are never modified, so declare them as
const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/include/media/drv-intf/tea575x.h b/include/media/drv-intf/tea575x.h
index 5d09657..fb272d4 100644
--- a/include/media/drv-intf/tea575x.h
+++ b/include/media/drv-intf/tea575x.h
@@ -63,7 +63,7 @@
 	u32 band;			/* 0: FM, 1: FM-Japan, 2: AM */
 	u32 freq;			/* frequency */
 	struct mutex mutex;
-	struct snd_tea575x_ops *ops;
+	const struct snd_tea575x_ops *ops;
 	void *private_data;
 	u8 card[32];
 	u8 bus_info[32];