staging: bcm2835-camera: Convert delayed_buffer to u32

A delayed buffer field is passed between the firmware and the
kernel.  This field is never used either so it's safe to
change it to a u32.
Signed-off-by: Michael Zoran <mzoran@crowfest.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-camera/mmal-msg.h

@@ -347,7 +347,7 @@ struct mmal_msg_event_to_host {
 	u32 cmd;
 	u32 length;
 	u8 data[MMAL_WORKER_EVENT_SPACE];
-	struct mmal_buffer_header *delayed_buffer;
+	u32 delayed_buffer;
 };
 
 /* all mmal messages are serialised through this structure */