V4L/DVB (9523): Increase number of BT8XX devices supported in a system

The BT8XX device driver currently only supports 16 such devices in a
system. This is too small for many surveillance applications. This
patch increases the number to 32.
Signed-off-by: Alan McIvor <alan.mcivor@reveal.co.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/bt8xx/bttvp.h

@@ -459,7 +459,7 @@ struct bttv {
 };
 
 /* our devices */
-#define BTTV_MAX 16
+#define BTTV_MAX 32
 extern unsigned int bttv_num;
 extern struct bttv bttvs[BTTV_MAX];