Release 4.4.21-openpower1

v4.4.21 stable release, which includes a fix for the fix for the NVMe
issue that is important for OpenPower machines.

Signed-off-by: Joel Stanley <joel@jms.id.au>
(cherry picked from commit 7291da551821fb09e0f7a212b53a7990b3a97f42)
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/linux/0002-drivers-drm-ast-Switch-SCU-to-VGA-output-on-POST.patch b/openpower/linux/0002-drivers-drm-ast-Switch-SCU-to-VGA-output-on-POST.patch
index d336120..4ee6c70 100644
--- a/openpower/linux/0002-drivers-drm-ast-Switch-SCU-to-VGA-output-on-POST.patch
+++ b/openpower/linux/0002-drivers-drm-ast-Switch-SCU-to-VGA-output-on-POST.patch
@@ -1,4 +1,4 @@
-From 5dc72365fce737764362d609bea5f969991efa75 Mon Sep 17 00:00:00 2001
+From 1bb5c96e14feb939411bcc8d53c6a85aefc3e533 Mon Sep 17 00:00:00 2001
 From: Jeremy Kerr <jk@ozlabs.org>
 Date: Wed, 2 Mar 2016 11:25:47 +0800
 Subject: [PATCH 2/9] drivers/drm/ast: Switch SCU to VGA output on POST