[MTD] Fix printk format error in gen_probe.c

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c
index b2d3052..52d59d3 100644
--- a/drivers/mtd/chips/gen_probe.c
+++ b/drivers/mtd/chips/gen_probe.c
@@ -39,7 +39,7 @@
 
 	if (mtd) {
 		if (mtd->size > map->size) {
-			printk(KERN_WARNING "Reducing visibility of %lKiB chip to %lKiB\n",
+			printk(KERN_WARNING "Reducing visibility of %ldKiB chip to %ldKiB\n",
 			       (unsigned long)mtd->size >> 10, 
 			       (unsigned long)map->size >> 10);
 			mtd->size = map->size;