ecryptfs: fix printk format warning for size_t

Fix printk format warning (from Linus's suggestion):

on i386:
  fs/ecryptfs/miscdev.c:433:38: warning: format '%lu' expects type 'long unsigned int', but argument 4 has type 'unsigned int'

and on x86_64:
  fs/ecryptfs/miscdev.c:433:38: warning: format '%u' expects type 'unsigned int', but argument 4 has type 'long unsigned int'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc:	Geert Uytterhoeven <geert@linux-m68k.org>
Cc:	Tyler Hicks <tyhicks@canonical.com>
Cc:	Dustin Kirkland <dustin.kirkland@gazzang.com>
Cc:	ecryptfs@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ecryptfs/miscdev.c

@@ -429,7 +429,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
 		goto memdup;
 	} else if (count < MIN_MSG_PKT_SIZE || count > MAX_MSG_PKT_SIZE) {
 		printk(KERN_WARNING "%s: Acceptable packet size range is "
-		       "[%d-%lu], but amount of data written is [%zu].",
+		       "[%d-%zu], but amount of data written is [%zu].",
 		       __func__, MIN_MSG_PKT_SIZE, MAX_MSG_PKT_SIZE, count);
 		return -EINVAL;
 	}