Dan Williams 4b5f747e82 Merge miscellaneous libnvdimm updates for 4.21
* Use common helpers, bitmap_zalloc() and kstrndup(), to replace open
  coded versions.
* Clarify the comments around hotplug vs initial init case for the nfit
  driver.
* Cleanup the libnvdimm init path.
2018-12-27 19:54:10 -08:00
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