linux: Release 4.4.15-openpower1

New patches:
 - powerpc/boot: Add OPAL console to epapr wrappers
 - net/mlx5: Add pci shutdown callback, for kexec support
 - tty/hvc: Use IRQF_SHARED for OPAL hvc consoles
 - tty/hvc: Use opal irqchip interface if available

Reworked due to upstream fixes:
 - xhci: do not halt the secondary HCD

Superseded by upstream fixes:
 - Revert "usb: xhci: stop everything on the first call to xhci_stop"
 - xhci: do not halt the secondary HCD

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0001-xhci-Use-xhci_pci_remove-for-xhci-device-shutdown.patch b/openpower/linux/0001-xhci-Use-xhci_pci_remove-for-xhci-device-shutdown.patch
new file mode 100644
index 0000000..cda2606
--- /dev/null
+++ b/openpower/linux/0001-xhci-Use-xhci_pci_remove-for-xhci-device-shutdown.patch
@@ -0,0 +1,27 @@
+From c4c563c6614ddc53c320d1b7e4abbb8d88e65dea Mon Sep 17 00:00:00 2001
+From: Thadeu Lima De Souza Cascardo <thadeul@br.ibm.com>
+Date: Tue, 25 Mar 2014 10:45:16 -0400
+Subject: [PATCH 01/10] xhci: Use xhci_pci_remove for xhci device shutdown
+
+Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ drivers/usb/host/xhci-pci.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index de644e56aa3b..f398ed390ff8 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -446,7 +446,7 @@ static struct pci_driver xhci_pci_driver = {
+ 	.remove =	xhci_pci_remove,
+ 	/* suspend and resume implemented later */
+ 
+-	.shutdown = 	usb_hcd_pci_shutdown,
++	.shutdown = 	xhci_pci_remove,
+ #ifdef CONFIG_PM
+ 	.driver = {
+ 		.pm = &usb_hcd_pci_pm_ops
+-- 
+2.8.1
+