[media] dvb: negative value assigned to unsigned int in CDRXD()

In CDRXD(), Negative number is assigned to unsigned variable
'state->noise_cal.tdCal2.

Members of 'SNoiseCal' should be 'signed short'.
Signed-off-by: NSantosh Nayak <santoshprasadnayak@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/drxd_hard.c

@@ -101,9 +101,9 @@ struct SCfgAgc {
 
 struct SNoiseCal {
 	int cpOpt;
-	u16 cpNexpOfs;
-	u16 tdCal2k;
-	u16 tdCal8k;
+	short cpNexpOfs;
+	short tdCal2k;
+	short tdCal8k;
 };
 
 enum app_env {