[SCSI] drivers/scsi/constants.c should include scsi_dbg.h

C files should include the files with the prototypes for their global
functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/constants.c

diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index ec16173..0d58d35 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -17,6 +17,7 @@
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_request.h>
 #include <scsi/scsi_eh.h>
+#include <scsi/scsi_dbg.h>