V4L/DVB (13081): saa7134: use the #define for the xc5000 radio_input field

Dmitri's patch for the Behold X7 didn't use the #define I had setup for
XC5000_RADIO_FM1, so cut over to using that instead of "1".
Signed-off-by: NDevin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/saa7134/saa7134-dvb.c

@@ -875,7 +875,7 @@ static struct zl10353_config behold_h6_config = {
 static struct xc5000_config behold_x7_tunerconfig = {
 	.i2c_address      = 0xc2>>1,
 	.if_khz           = 4560,
-	.radio_input      = 1,
+	.radio_input      = XC5000_RADIO_FM1,
 };
 
 static struct zl10353_config behold_x7_config = {