V4L/DVB (11892): Siano: smsendian - declare function as extern

Declare the object function as 'extern'

Signed-off-by: Uri Shkolnik <uris@siano-ms.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/siano/smsendian.h b/drivers/media/dvb/siano/smsendian.h
index 7fbedc6..1624d6f 100644
--- a/drivers/media/dvb/siano/smsendian.h
+++ b/drivers/media/dvb/siano/smsendian.h
@@ -24,9 +24,9 @@
 
 #include <asm/byteorder.h>
 
-void smsendian_handle_tx_message(void *buffer);
-void smsendian_handle_rx_message(void *buffer);
-void smsendian_handle_message_header(void *msg);
+extern void smsendian_handle_tx_message(void *buffer);
+extern void smsendian_handle_rx_message(void *buffer);
+extern void smsendian_handle_message_header(void *msg);
 
 #endif /* __SMS_ENDIAN_H__ */