Release 4.4.20-openpower1

v4.4.20 stable release, which includes a fix for a NVMe issue that is
important for OpenPower machines.

Signed-off-by: Joel Stanley <joel@jms.id.au>
(cherry picked from commit 1163cfe1e42cad2c4a50e1779d29516d82b4872c)
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/linux/0004-xhci-do-not-halt-the-secondary-HCD.patch b/openpower/linux/0004-xhci-do-not-halt-the-secondary-HCD.patch
index ab4ec08..4ce098a 100644
--- a/openpower/linux/0004-xhci-do-not-halt-the-secondary-HCD.patch
+++ b/openpower/linux/0004-xhci-do-not-halt-the-secondary-HCD.patch
@@ -1,4 +1,4 @@
-From 59a6044c4ca2c6e9f06dccb7fcb50cabce84c6d1 Mon Sep 17 00:00:00 2001
+From 2fa1cda66612d20bc08b86298a7d9904b15d1827 Mon Sep 17 00:00:00 2001
 From: Joel Stanley <joel@jms.id.au>
 Date: Tue, 19 Jul 2016 22:43:26 +0930
 Subject: [PATCH 4/9] xhci: do not halt the secondary HCD
@@ -14,7 +14,7 @@
  1 file changed, 15 insertions(+), 5 deletions(-)
 
 diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
-index 6fe0174da226..8f48dd84ddd2 100644
+index adc169d2fd76..ec92a843325b 100644
 --- a/drivers/usb/host/xhci.c
 +++ b/drivers/usb/host/xhci.c
 @@ -682,6 +682,21 @@ void xhci_stop(struct usb_hcd *hcd)