[media] stb0899: fix diseqc messages getting lost

- Some badly written applications in conjuction with certain SEC devices
  do send too many messages causing the DiSEqC bus to get congested. As
  a result, the end devices do get confused and hence do not respond.
  The issue was found by Julian Scheel.
Signed-off-by: NManu Abraham <manu@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/stb0899_drv.c

@@ -714,7 +714,7 @@ static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_ma
 	reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 	STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
 	stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
-
+	msleep(100);
 	return 0;
 }