[media] stv0900: speed up DVB-S searching

Simptoms:
After zapping DVB-S2 channel searching for DVB-S tooks long time.
Now it takes less than a second.
Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/stv0900_core.c

@@ -1604,6 +1604,9 @@ static enum dvbfe_search stv0900_search(struct dvb_frontend *fe,
 	p_search.standard = STV0900_AUTO_SEARCH;
 	p_search.iq_inversion = STV0900_IQ_AUTO;
 	p_search.search_algo = STV0900_BLIND_SEARCH;
+	/* Speeds up DVB-S searching */
+	if (c->delivery_system == SYS_DVBS)
+		p_search.standard = STV0900_SEARCH_DVBS1;
 
 	intp->srch_standard[demod] = p_search.standard;
 	intp->symbol_rate[demod] = p_search.symbol_rate;