qla2xxx: Include <delay.h> file for msleep declartion in qla_nx2.c file.

Signed-off-by: NAtul Deshmukh <atul.deshmukh@qlogic.com>
Signed-off-by: NSaurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

drivers/scsi/qla2xxx/qla_nx2.c

@@ -6,6 +6,7 @@
  */
 
 #include <linux/vmalloc.h>
+#include <linux/delay.h>
 
 #include "qla_def.h"
 #include "qla_gbl.h"