V4L/DVB: stv0900: make local functions static

The functions stv0900_sw_algo() and stv0900_set_dvbs1_track_car_loop() are only used
locally so mark them static.

This will remove the following sparse warnings (see "make C=1"):
 * symbol 'stv0900_sw_algo' was not declared. Should it be static?
 * symbol 'stv0900_set_dvbs1_track_car_loop' was not declared. Should it be static?
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/stv0900_sw.c

@@ -193,7 +193,7 @@ static int stv0900_search_carr_sw_loop(struct stv0900_internal *intp,
 	return lock;
 }
 
-int stv0900_sw_algo(struct stv0900_internal *intp,
+static int stv0900_sw_algo(struct stv0900_internal *intp,
 				enum fe_stv0900_demod_num demod)
 {
 	int	lock = FALSE,
@@ -795,7 +795,7 @@ static enum fe_stv0900_fec stv0900_get_vit_fec(struct stv0900_internal *intp,
 	return prate;
 }
 
-void stv0900_set_dvbs1_track_car_loop(struct stv0900_internal *intp,
+static void stv0900_set_dvbs1_track_car_loop(struct stv0900_internal *intp,
 					enum fe_stv0900_demod_num demod,
 					u32 srate)
 {