[media] cx24120: constify static data

Use const on the static data, as gcc may optimize better the
code. Also, would prevent that some code would override the
data there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Patrick Boettcher <patrick.boettcher@posteo.de>

drivers/media/dvb-frontends/cx24120.c

@@ -704,12 +704,14 @@ static int cx24120_read_status(struct dvb_frontend *fe, fe_status_t *status)
  * Used for decoding the REG_FECMODE register
  * once tuned in.
  */
-static struct cx24120_modfec {
+struct cx24120_modfec {
 	fe_delivery_system_t delsys;
 	fe_modulation_t mod;
 	fe_code_rate_t fec;
 	u8 val;
-} modfec_lookup_table[] = {
+};
+
+static const struct cx24120_modfec modfec_lookup_table[] = {
 	/*delsys     mod    fec       val */
 	{ SYS_DVBS,  QPSK,  FEC_1_2,  0x01 },
 	{ SYS_DVBS,  QPSK,  FEC_2_3,  0x02 },
@@ -784,7 +786,7 @@ static int cx24120_get_fec(struct dvb_frontend *fe)
  * There's probably some way of calculating these but I
  * can't determine the pattern
  */
-static struct cx24120_clock_ratios_table {
+struct cx24120_clock_ratios_table {
 	fe_delivery_system_t delsys;
 	fe_pilot_t pilot;
 	fe_modulation_t mod;
@@ -792,7 +794,9 @@ static struct cx24120_clock_ratios_table {
 	u32 m_rat;
 	u32 n_rat;
 	u32 rate;
-} clock_ratios_table[] = {
+};
+
+static const struct cx24120_clock_ratios_table clock_ratios_table[] = {
 	/*delsys     pilot      mod    fec       m_rat    n_rat   rate */
 	{ SYS_DVBS2, PILOT_OFF, QPSK,  FEC_1_2,  273088,  254505, 274 },
 	{ SYS_DVBS2, PILOT_OFF, QPSK,  FEC_3_5,  17272,   13395,  330 },
@@ -921,12 +925,14 @@ static int cx24120_set_inversion(struct cx24120_state *state,
 }
 
 /* FEC lookup table for tuning */
-static struct cx24120_modfec_table {
+struct cx24120_modfec_table {
 	fe_delivery_system_t delsys;
 	fe_modulation_t mod;
 	fe_code_rate_t fec;
 	u8 val;
-} modfec_table[] = {
+};
+
+static const struct cx24120_modfec_table modfec_table[] = {
 	/*delsys     mod    fec       val */
 	{ SYS_DVBS,  QPSK,  FEC_1_2,  0x2e },
 	{ SYS_DVBS,  QPSK,  FEC_2_3,  0x2f },