[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>
diff --git a/drivers/media/dvb-frontends/tda10023.c b/drivers/media/dvb-frontends/tda10023.c
index 0c416be..8028007 100644
--- a/drivers/media/dvb-frontends/tda10023.c
+++ b/drivers/media/dvb-frontends/tda10023.c
@@ -514,7 +514,7 @@ static void tda10023_release(struct dvb_frontend* fe)
 	kfree(state);
 }
 
-static struct dvb_frontend_ops tda10023_ops;
+static const struct dvb_frontend_ops tda10023_ops;
 
 struct dvb_frontend *tda10023_attach(const struct tda10023_config *config,
 				     struct i2c_adapter *i2c,
@@ -571,7 +571,7 @@ struct dvb_frontend *tda10023_attach(const struct tda10023_config *config,
 	return NULL;
 }
 
-static struct dvb_frontend_ops tda10023_ops = {
+static const struct dvb_frontend_ops tda10023_ops = {
 	.delsys = { SYS_DVBC_ANNEX_A, SYS_DVBC_ANNEX_C },
 	.info = {
 		.name = "Philips TDA10023 DVB-C",