[SCSI] Mark some core scsi data structures const

patch below marks a few scsi core datastructures as const, so that they end up
in the .rodata section and don't cacheline share with things that get dirtied

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 4634929..15842b1 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -21,7 +21,7 @@
 #include "scsi_priv.h"
 #include "scsi_logging.h"
 
-static struct {
+static const struct {
 	enum scsi_device_state	value;
 	char			*name;
 } sdev_states[] = {
@@ -48,7 +48,7 @@
 	return name;
 }
 
-static struct {
+static const struct {
 	enum scsi_host_state	value;
 	char			*name;
 } shost_states[] = {