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svn:author
V 7
landonf
K 8
svn:date
V 27
2016-12-19T20:31:27.970299Z
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svn:log
V 486
bhnd(4): Add support for exporting all (or a subtree) of NVRAM
properties backed by an NVRAM store.

This will be used to support:

- Serializing the current NVRAM state for writing back to flash.
- Exporting subsidiary device paths for serialization and upload to fullmac
  chipsets.

Additionally, this includes an improvement to BCM-RAW format detection
to avoid matching on BCM-TEXT NVRAM data.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D8761

END