V4L/DVB (12970): saa7164: fix 64bit build warning

Fix the following build warning:

  CC [M]  saa7164-core.o
saa7164-core.c: In function 'saa7164_buffer_deliver':
saa7164-core.c:113: warning: passing argument 2 of 'dvb_dmx_swfilter_packets'
		    from incompatible pointer type
Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/saa7164/saa7164-core.c

@@ -77,7 +77,7 @@ static void saa7164_buffer_deliver(struct saa7164_buffer *buf)
 	struct saa7164_tsport *port = buf->port;
 
 	/* Feed the transport payload into the kernel demux */
-	dvb_dmx_swfilter_packets(&port->dvb.demux, buf->cpu,
+	dvb_dmx_swfilter_packets(&port->dvb.demux, (u8 *)buf->cpu,
 		SAA7164_TS_NUMBER_OF_LINES);
 
 }