[media] dvb: make DVB frontend *_ops instances "const"

These are immutable.  Making them "const" allows the compiler to move
them to the "rodata" section.

Note that cxd2841er_t_c_ops cannot be made "const", because
cxd2841er_attach() modifies it.  Ouch!

[mchehab@s-opensource.com: fix merge conflicts]
Signed-off-by: Max Kellermann <max.kellermann@gmail.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/dvb-frontends/s5h1432.c

@@ -341,7 +341,7 @@ static void s5h1432_release(struct dvb_frontend *fe)
 	kfree(state);
 }
 
-static struct dvb_frontend_ops s5h1432_ops;
+static const struct dvb_frontend_ops s5h1432_ops;
 
 struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config,
 				    struct i2c_adapter *i2c)
@@ -370,7 +370,7 @@ struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config,
 }
 EXPORT_SYMBOL(s5h1432_attach);
 
-static struct dvb_frontend_ops s5h1432_ops = {
+static const struct dvb_frontend_ops s5h1432_ops = {
 	.delsys = { SYS_DVBT },
 	.info = {
 		 .name = "Samsung s5h1432 DVB-T Frontend",