kernel: Move to Linux v5.2.5-openpower1

PowerPC related fixes:

 powerpc/pmu: Set pmcregs_in_use in paca when running as LPAR
 powerpc/tm: Fix oops on sigreturn on systems without TM
 powerpc/mm: Limit rma_size to 1TB when running without HV mode
 powerpc/xive: Fix loop exit-condition in xive_find_target_in_mask()
 powerpc/dma: Fix invalid DMA mmap behavior
 powerpc/eeh: Handle hugepages in ioremap space
 powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h
 powerpc/irq: Don't WARN continuously in arch_local_irq_restore()
 powerpc/mm: Handle page table allocation failures
 powerpc/mm: mark more tlb functions as __always_inline
 powerpc: silence a -Wcast-function-type warning in dawr_write_file_bool
 powerpc/xmon: Fix disabling tracing while in xmon
 powerpc/cacheflush: fix variable set but not used
 powerpc/pci/of: Fix OF flags parsing for 64bit BARs
 powerpc/powernv: Fix stale iommu table base after VFIO
 powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state.
 powerpc/powernv/npu: Fix reference leak
 powerpc/watchpoint: Restore NV GPRs while returning from exception
 mm/nvdimm: add is_ioremap_addr and use that to check ioremap address

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0002-Release-OpenPower-kernel.patch b/openpower/linux/0002-Release-OpenPower-kernel.patch
index 005e3c4..7669486 100644
--- a/openpower/linux/0002-Release-OpenPower-kernel.patch
+++ b/openpower/linux/0002-Release-OpenPower-kernel.patch
@@ -9,13 +9,13 @@
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/Makefile b/Makefile
-index d8f5dbfd6b76..ebb67da77d7c 100644
+index 78bd926c8439..4bd787a6beff 100644
 --- a/Makefile
 +++ b/Makefile
 @@ -2,7 +2,7 @@
  VERSION = 5
  PATCHLEVEL = 2
- SUBLEVEL = 1
+ SUBLEVEL = 5
 -EXTRAVERSION =
 +EXTRAVERSION = -openpower1
  NAME = Bobtail Squid