kernel: Move to Linux v5.3.5-openpower1

This adds Firmware Assissted dump passthrough mode to the OpenPower
kernel. These patches were backported from 5.4, and the
CONFIG_PRESERVE_FA_DUMP was added.

PowerPC related changes:

 powerpc: dump kernel log before carrying out fadump or kdump
 powerpc/eeh: Clean up EEH PEs after recovery finishes
 powerpc/64s/exception: machine check use correct cfar for late handler
 powerpc/eeh: Clear stale EEH_DEV_NO_HANDLER flag
 powerpc/perf: fix imc allocation failure handling
 powerpc/64s/radix: Fix memory hotplug section page table creation
 powerpc/futex: Fix warning: 'oldval' may be used uninitialized in this function
 powerpc/ptdump: fix walk_pagetables() address mismatch
 powerpc/rtas: use device model APIs and serialization during LPM
 powerpc/xmon: Check for HV mode when dumping XIVE info from OPAL
 powerpc/powernv/ioda2: Allocate TCE table levels on demand for default DMA window
 powerpc/imc: Dont create debugfs files for cpu-less nodes
 powerpc/Makefile: Always pass --synthetic to nm if supported
 powerpc/xive: Fix bogus error code returned by OPAL

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0006-Release-OpenPower-kernel.patch b/openpower/linux/0006-Release-OpenPower-kernel.patch
new file mode 100644
index 0000000..834f35e
--- /dev/null
+++ b/openpower/linux/0006-Release-OpenPower-kernel.patch
@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joel Stanley <joel@jms.id.au>
+Date: Tue, 16 Jul 2019 11:40:02 +0930
+Subject: [PATCH 6/6] Release OpenPower kernel
+
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index bf03c110ed9b..d470bb349bc2 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2,7 +2,7 @@
+ VERSION = 5
+ PATCHLEVEL = 3
+ SUBLEVEL = 5
+-EXTRAVERSION =
++EXTRAVERSION = -openpower1
+ NAME = Bobtail Squid
+ 
+ # *DOCUMENTATION*