[SCSI] lpfc: lpfc_debugfs.c: fix typo

This patch fixes a typo introduced by
commit bbfbbbc1.

It wasn't a compile error since CONFIG_LPFC_DEBUG_FS is not (yet?)
available as an option.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/lpfc/lpfc_debugfs.c

@@ -901,7 +901,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
 		}
 	}
 
-	vport->disc_trc = kmzlloc(
+	vport->disc_trc = kzalloc(
 		(sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
 		GFP_KERNEL);