[SCSI] drivers/scsi/NCR53C9x.c: make a struct static

This patch makes a needlessly global struct static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c
index 3c86655..74293f6 100644
--- a/drivers/scsi/NCR53C9x.c
+++ b/drivers/scsi/NCR53C9x.c
@@ -94,7 +94,7 @@
 };
 
 /* The master ring of all esp hosts we are managing in this driver. */
-struct NCR_ESP *espchain;
+static struct NCR_ESP *espchain;
 int nesps = 0, esps_in_use = 0, esps_running = 0;
 
 irqreturn_t esp_intr(int irq, void *dev_id, struct pt_regs *pregs);