firewire: fw-sbp2: memset wants string.h

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Kristian Høgsberg <krh@redhat.com>

drivers/firewire/fw-sbp2.c

@@ -36,6 +36,7 @@
 #include <linux/scatterlist.h>
 #include <linux/dma-mapping.h>
 #include <linux/blkdev.h>
+#include <linux/string.h>
 #include <linux/timer.h>
 
 #include <scsi/scsi.h>