V4L/DVB: STV0288 Incorrect bit sample for Vitterbi status

bit 3(LK) indicates that the Vstatus is locked.
Currently using bit 7(CF) which is usually present, results in early
aborted search in FEC_AUTO and missing channels.
Signed-off-by: NMalcolm Priestley <tvboxspy@gmail.com>
Cc: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/stv0288.c

@@ -486,7 +486,7 @@ static int stv0288_set_frontend(struct dvb_frontend *fe,
 	tda[2] = 0x0; /* CFRL */
 	for (tm = -6; tm < 7;) {
 		/* Viterbi status */
-		if (stv0288_readreg(state, 0x24) & 0x80)
+		if (stv0288_readreg(state, 0x24) & 0x8)
 			break;
 
 		tda[2] += 40;