[media] dvb-usb: increase MAX_NO_OF_FE_PER_ADAP from 2 to 3

The following patch adds support for a third frontend to exist on a single
DVB adapter, in the mxl111sf driver. This patch allows that to be possible.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/dvb-usb.h

@@ -157,7 +157,7 @@ struct dvb_usb_adapter_fe_properties {
 	int size_of_priv;
 };
 
-#define MAX_NO_OF_FE_PER_ADAP 2
+#define MAX_NO_OF_FE_PER_ADAP 3
 struct dvb_usb_adapter_properties {
 	int size_of_priv;