[media] dvb: tc90522: re-add symbol-rate report

symbol-rate report was wrongly removed off by the commit:906aaf5a .

Signed-off-by: Akihiro Tsukada <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb-frontends/tc90522.c

···
 	state = fe->demodulator_priv;
 	c = &fe->dtv_property_cache;
 	c->delivery_system = SYS_ISDBS;
+	c->symbol_rate = 28860000;
 
 	layers = 0;
 	ret = reg_read(state, 0xe6, val, 5);