libnvdimm, pfn: 'resource'-address and 'size' attributes for pfn devices
Currenty with a raw mode pmem namespace the physical memory address range for
the device can be obtained via /sys/block/pmemX/device/{resource|size}. Add
similar attributes for pfn instances that takes the struct page memmap and
section padding into account.
Reported-by: Haozhong Zhang <haozhong.zhang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>