kernel: Move to Linux v5.4.25-openpower1

A backport from the scsi tree for an issue with the IPR
adaptor is added.

PowerPC releated changes:

 powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems
 powerpc/mm: Fix missing KUAP disable in flush_coherent_icache()
 powerpc: Convert flush_icache_range & friends to C
 powerpc: define helpers to get L1 icache sizes
 powerpc/hugetlb: Fix 8M hugepages on 8xx
 powerpc/hugetlb: Fix 512k hugepages on 8xx with 16k page size
 powerpc/entry: Fix an #if which should be an #ifdef in entry_32.S
 powerpc/tm: Fix clearing MSR[TS] in current when reclaiming on signal delivery
 powerpc/eeh: Fix deadlock handling dead PHB

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0003-Release-OpenPower-kernel.patch b/openpower/linux/0003-Release-OpenPower-kernel.patch
index 47c7620..29f9d83 100644
--- a/openpower/linux/0003-Release-OpenPower-kernel.patch
+++ b/openpower/linux/0003-Release-OpenPower-kernel.patch
@@ -9,13 +9,13 @@
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/Makefile b/Makefile
-index 9428ec3b611a..9cef4df5e554 100644
+index 85e41313f078..d4e6b58c7199 100644
 --- a/Makefile
 +++ b/Makefile
 @@ -2,7 +2,7 @@
  VERSION = 5
  PATCHLEVEL = 4
- SUBLEVEL = 22
+ SUBLEVEL = 25
 -EXTRAVERSION =
 +EXTRAVERSION = -openpower1
  NAME = Kleptomaniac Octopus