Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:

 - Two fixes for compatibility with the ACPI 6.1 specification.

   Without these fixes multi-interface DIMMs will fail to be probed, and
   address range scrub commands to find memory errors will give results
   that the kernel will mis-interpret.  For multi-interface DIMMs Linux
   will accept either the original 6.0 implementation or 6.1.

   For address range scrub we'll only support 6.1 since ACPI formalized
   this DSM differently than the original example [1] implemented in
   v4.2.  The expectation is that production systems will only ever ship
   the ACPI 6.1 address range scrub command definition.

 - The wider async address range scrub work targeting 4.6 discovered
   that the original synchronous implementation in 4.5 is not sizing its
   return buffer correctly.

 - Arnd caught that my recent fix to the size of the pfn_t flags missed
   updating the flags variable used in the pmem driver.

 - Toshi found that we mishandle the memremap() return value in
   devm_memremap().

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nvdimm: use 'u64' for pfn flags
  devm_memremap: Fix error value when memremap failed
  nfit: update address range scrub commands to the acpi 6.1 format
  libnvdimm, tools/testing/nvdimm: fix 'ars_status' output buffer sizing
  nfit: fix multi-interface dimm handling, acpi6.1 compatibility

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