[SCSI] lpfc: Fix for "Unknown IOCB command Data: x0 x3 x0 x0"

Fix for "Unknown IOCB command Data: x0 x3 x0 x0" messages and
inability to see devices

On some platforms, the host-memory based ring mgmt area was not
zero. Also, driver wasn't manipulating the entire 32bits of the ring
pointers.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index ba457391..e591611 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1429,6 +1429,7 @@
 	if (!phba->slim2p)
 		goto out_iounmap;
 
+	memset(phba->slim2p, 0, SLI2_SLIM_SIZE);
 
 	/* Initialize the SLI Layer to run with lpfc HBAs. */
 	lpfc_sli_setup(phba);