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>
diff --git a/openpower/linux/0005-net-mlx5-Add-pci-shutdown-callback.patch b/openpower/linux/0005-net-mlx5-Add-pci-shutdown-callback.patch
index a2419b2..52e5ac4 100644
--- a/openpower/linux/0005-net-mlx5-Add-pci-shutdown-callback.patch
+++ b/openpower/linux/0005-net-mlx5-Add-pci-shutdown-callback.patch
@@ -1,4 +1,4 @@
-From 2a81a42abe8629c8ab1012e2376918665b9cab47 Mon Sep 17 00:00:00 2001
+From 3d4d62589a056631ce946e0d8b0812ca9bafa615 Mon Sep 17 00:00:00 2001
 From: Carol L Soto <clsoto@linux.vnet.ibm.com>
 Date: Tue, 12 Jul 2016 17:04:07 -0500
 Subject: [PATCH 5/9] net/mlx5: Add pci shutdown callback