kernel: Move to Linux v5.4.132-openpower1

PowerPC related fixes since 5.4.107:

 powerpc: Offline CPU in stop_this_cpu()
 powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi()
 powerpc/64s: Fix crashes when toggling entry flush barrier
 powerpc/64s: Fix crashes when toggling stf barrier
 powerpc/iommu: Annotate nested lock for lockdep
 powerpc/smp: Set numa node before updating mask
 powerpc/xive: Fix xmon command "dxi"
 powerpc/perf: Fix PMU constraint check for EBB events
 powerpc/64s: Fix pte update for kernel memory on radix
 powerpc: Fix HAVE_HARDLOCKUP_DETECTOR_ARCH build configuration
 powerpc/prom: Mark identical_pvr_fixup as __init
 powerpc/fadump: Mark fadump_calculate_reserve_size as __init
 powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h
 powerpc/eeh: Fix EEH handling for hugepages in ioremap space.
 powerpc: Force inlining of cpu_has_feature() to avoid build failure

Additionally, two of the patches that were carried have been merged into
the upstream stable tree:

 x86/efi: move common keyring handler functions to new file
 certs: Add EFI_CERT_X509_GUID support for dbx entries

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0017-Release-OpenPower-kernel.patch b/openpower/linux/0017-Release-OpenPower-kernel.patch
new file mode 100644
index 0000000..adee575
--- /dev/null
+++ b/openpower/linux/0017-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: Thu, 15 Jul 2021 17:21:55 +0930
+Subject: [PATCH 17/17] 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 58ea876fa183..acd516ba62d8 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2,7 +2,7 @@
+ VERSION = 5
+ PATCHLEVEL = 4
+ SUBLEVEL = 132
+-EXTRAVERSION =
++EXTRAVERSION = -openpower1
+ NAME = Kleptomaniac Octopus
+ 
+ # *DOCUMENTATION*