libnvdimm, label: add v1.2 label checksum support

The v1.2 namespace label specification adds a fletcher checksum to each
label instance. Add generation and validation support for the new field.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2017-06-06 14:56:43 -07:00
commit 355d838878